867. How are the best way to make and save money at 22 years old
Fantastic question to be asking at the age of 22! A very wise man suggested to me the following with regard to your net income I've purposely not included saving a sum of money for a house deposit, as this is very much cultural and lots of EU countries have a low rate of home ownership. On the education versus entrepreneur question. I don't think these are mutually exclusive. I am a big advocate of education (I have a B.Eng) but have following working in the real world for a number of years have started an IT business in data analytics. My business partner and I saw a gap in the market and have exploited it. I continue to educate myself now in short courses on running business, data analytics and investment. My business partner did things the otherway around, starting the company first, then getting an M.Sc. Other posters have suggested that investing your money personally is a bad idea. I think it is a very good idea to take control of your own destiny and choose how you will invest your money.   I would say similarly that giving your money to someone else who will sometimes lose you money and will charge you for the privilege is a bad idea. Also putting your money in a box under your bed or in the bank and receive interest that is less than inflation are bad ideas. You need to choose where to invest your money otherwise you will gain no advantage from the savings and inflation will erode your buying power. I would suggest that you educate yourself in the investment options that are available to you and those that suit you personality and life circumstances. Here are some notes on learning about stock market trading/investing if you choose to take that direction along with some books for self learning.

868. Why I can't view my debit card pre-authorized amounts?
No money is stolen. They don't show you the hold for whatever reason (not so good a bank?), but the money is still yours. You just cannot use it, but it is still on your account. These holds usually go away after a week. In certain cases (like a security deposit) it may take up to 30 days. You can request from the merchant to cancel the hold if it is no longer necessary. They'll have to be proactive on that, and some merchants wouldn't want the hassle. It is however a known issue. When I was working in the banking industry, we would routinely receive these hold cancellation requests from merchants (hotels and car rentals).

869. The life cycle of money
Echoing JohnF, and assuming you mean the physical, rather than abstract meaning of money?  The abstract concept obviously isn't replaced (unless the currency is discredited, or like the creation of the Euro which saw local currencies abandoned). The actual bits of paper are regularly collected, shredded (into itty-bitty-bits) and destroyed.  Coinage tends to last a lot longer, but it also collected and melted down eventually. Depends on the country, though.  No doubt, many people who took a gap year to go travelling in points diverse came across countries where the money is a sort of brown-grey smudge you hold with care in thick wadges. The more modern economies replace paper money on a dedicated cycle (around three years according to Wikipedia, anyway).

870. Credit Card Points from Refund
That transaction probably cost the merchant $0.50 + 3% or close to $5.  They should have refunded your credit card so they could have recouped some of the fees. (I imagine that's why big-box retailers like Home Depot always prefer to put it back on your card than give you store credit) Consider yourself lucky you made out with $0.15 this time.  (Had they refunded your card, the 1% of $150 credit would have gone against next month's reward) Once upon a time folks were buying money from the US Mint by the tens of thousands $ range and receiving credit card rewards, then depositing the money to pay it off.. They figured that out and put a stop to it.

871. How to motivate young people to save money
Teach them that money can help solve most (if not all the problems) in life. If they truly appreciate the value of saving every single penny, eventually they will come to realize that if you don't touch your money (waste it on useless things you don't need such as eating out) that it can grow. Also teach them the value of compounding interest, even a TFSA/high interest savings account with a modest 3-4% annual ROI can be big with yearly additions and no withdrawals for a lifetime.  Tell them to take Johnny Appleseed for example. Johnny starts up his TFSA with help from mom and dad at the age of 15, let's say they put in $5000 all together. Now let's say he adds in a modest $2500 to his TFSA every year until he is 55 years old. If the TFSA has an interest rate of 4%, then when he's 55 he'll have over half a million dollars in the bank and he really didn't have to do much besides not touch it.

872. When will the U.K. convert to the Euro as an official currency?
In many countries in Europe the prices shot through the roof, so it is not all positive. Also the switching country gives out lot of monetary control that is not welcomed by many.  I think that UK is not going to change to euro for a long long time.

873. Closing a credit card with an annual fee without hurting credit score?
The two factors that will hurt you the most is the age of the credit account, and your available credit to debt ratio.  Removing an older account takes that account out of the equation of calculating your overall credit score, which can hurt significantly, especially if that is the only, or one of just a couple, of open credit lines you have available. Reducing your available credit will make your current debt look bigger than what it was before you closed your account. Going over a certain percentage for your debt to available credit can make you look less favorable to lenders. [As stated above, closing a credit card does remove it from the credit utilization calculation which can raise your debt/credit ratio. It does not, however; affect the average age of credit cards. Even closed accounts stay on your credit report for ten years and are credited toward average age of cards. When the closed credit card falls off your report, only then, will the average age of credit cards be recalculated.] And may I suggest getting your free credit report from https://www.annualcreditreport.com . It's the only place considered 'official' to receive your free annual credit report as told by the FTC. Going to other 3rd party sites to pull your credit report can risk your information being traded or sold. EDIT: To answer your second point, there are numerous factors that banks and creditors will consider depending on the type of card you're applying for. The heavier the personal rewards (cash back, flyer miles, discounts, etc.) the bigger the stipulation. Some factors to consider are your income to debt ratio, income to available credit ratio, number of revolving lines of credit, debt to available credit ratio, available credit to debt ratio, and whether or not you have sufficient equity and/or assets to cover both your debt and available credit. They want to make sure that if you go crazy and max out all of your lines of credit, that you are capable of paying it all back in a sufficient amount of time. In other words, your volatility as a debt-consumer.

874. When should I walk away from my mortgage?
Very few people's credit is worth $100,000. The average homeowner's credit (family of four with good to very good credit) is worth about $30,000. This is a pure business decision. The bank knew the law when they extended the mortgage to you, and part of the amount they're charging you goes to cover the risk that you might opt to walk away. The mortgage was an agreement between you and the bank and it specified the penalty for you walking away. Taking the agreed upon penalty for an action specifically contemplated in the agreement is also keeping the agreement.

875. Why not pay in full upfront for a car?
There many car loans at zero percent interest.   Finance the car at zero percent, then take your money and invest it. If you want to be super safe buy a CD the same length as the car loan. 5 years you will get 2%.  If you still want safety and a better return take up a asset allocation strategy that moves your cash to risky assets when the market is performing well, then to cash, bonds, or cds when the market under-performs. Now you have your car with a zero percent loan and you are making the return on the money instead of the car company.

876. APR for a Loan Paid Off Monthly
If your APR is quoted as nominal rate compounded monthly, the APR is 108.6 %. Here is the calculation, (done in Mathematica ). The sum of the discounted future payments (p) are set equal to the present value (pv) of the loan, and solved for the periodic interest rate (r).  Details of the effective interest rate calculation can be found here. http://en.wikipedia.org/wiki/Effective_interest_rate#Calculation

877. How to start investing for an immigrant?
I am in a similar situation (sw developer, immigrant waiting for green card, no debt, healthy, not sure if I will stay here forever, only son of aging parents). I am contributing to my 401k to max my employer contribution (which is 3.5%, you should find that out from your HR).  I don't have any specific financial goal in my mind, so beside an emergency fund (I was recommended to have at least 6 months worth of salary in cash) I am stashing away 10% of my income which I invest with a notorious robot-adviser. The rate is 80% stocks, 20% bonds, as I don't plan to use those funds anytime soon. Should I go back to my country, I will bring with me (or transfer) the cash, and leave my investments here. The 401K will keep growing and so the investments, and perhaps I will be able to retire earlier than expected. It's quite vague I know, but in the situation we are, it's hard to make definite plans.

878. Visitor Shopping in the US: Would I get tax refund? Would I have to pay anything upon departure?
The US doesn't have a Value Added Tax, which is the one usually refundable upon departing the country... so sales taxes you pay in this country stay in this country and you don't get a refund. Just remember to treat the tax as an implied part of the price. (And be aware that state and local taxes may vary, so the total price may be higher in one place than in another. New York City adds a few percent on top of the state sales tax, for example.) If you aren't sure how much tax would be, don't be afraid to ask.

879. What is the purpose of endorsing a check?
I actually had to go to the bank today and so I decided to ask. The answer I was given is that a check is a legal document (a promise to pay).  In order to get your money from the bank, you need to sign the check over to them.  By endorsing the check you are attesting to the fact that you have transferred said document to them and they can draw on that account.

880. How do I account for 100 percent vendor discounts in GnuCash 2.6.5
The answer was provided to me at the Gnucash chat by "warlord". The procedure is as follows: After doing this you will have:

881. How can I find out what factors are making a stock's price rise?
At any moment, the price is where the supply (seller) and demand (buyer) intersect. This occurs fast enough you don't see it as anything other than bid/ask. What moves it? News of a new drug, device, sandwich, etc. Earning release, whether above or below expectations, or even dead-on, will often impact the price.  Every night, the talking heads try to explain the day's price moves. When they can't, they often report "profit taking" for a market drop, or other similar nonsense. Some moves are simple random change.

882. Are there capital gains taxes or dividend taxes if I invest in the U.S. stock market from outside of the country?
I believe that tax will be withheld (at 30%?) on dividends paid to non-residents.  You can claim it back if your country has a tax treaty with the USA, but you will need to file.  You probably also need to file a W-series withholding form (eg a W9-BEN). Interesting question.  I would like to hear a more definitive answer.
