YES.

If the client you use does that (send the change to a new address) then YES, you have to reprint it. This is an important thing often overlooked.

1)Good luck, this is not e-gold, this is not paypal. There is not a company, central server or anything similar in the bitcoin network. It is totally decentralized.
2)Try selling bitcoins on mt-gox and getting cash, call us when you finally receive it...
10)Not our problem. Wrong section. Ask to Obama.

Ahahahahaha nice joke 

Because it is a joke, am i right? You cannot be serious 

Perfect? Nah it has its problems

Who mined coins in 2009? Satoshi and, at most, some other people, note how difficulty was stuck at 1 for like a year or so, this means only one or so cpu were mining.

+1

An absurd attempt, it shows how much desperate they are

The indipendence war was LAWFUL? 

Stop spamming wikipedia threads

It is clear they do not need our donations.

8 cent isn't exactly "low"

They would not enter in the blockchain then.

You forgot fees. Millions of transactions means tons and tons of fees.

It is scary how much money they manage...

Because tomorrow the bitcoin price can happily crash. When you are in a bubble, you should sell/use the coins before the crash  

Also, the price in the long term increase BECAUSE people use coins.

You think so? Recent blocks are heavier and thus slower to get 

Yes, so stay calm  

You installed the Bitcoin-QT client, it is a full node client, it means that it not only act as a wallet but it also download the FULL blockchain of bitcoin, wich means every transactions done and relay it to other nodes. The bitcoin network is a p2p one, so the full nodes relay all the transactions between them.

Yes, it is downloading more than 10GB of data and verifying them all.

Note that you do not need to have a full node, it is meant for people who want to run it constantly, having a full node when you use it only for 5minutes every some days is pointless. Get Multibit for example, much much quicker, for the same security

Oh and make sure you backup your wallet, have no virus on the pc and learnt about how to securely store your coins!

Because bitcoin is not backed by the full faith and credit of an issuing government 

Space, the final frontier

Why should not be ASIC for litecoins? Everything that run on a computer can run on specialized hardware. It runs on generic hardware, why the hell should it NOT run on specialized one?

Truecrypt can use AES, Serpent and/or Twofish. You can use them all together. As for hash algorithm you can choose between RIPEMD-160, SHA-512 and Whirpool

Maybe you should use Truecrypt instead of zip/rar