Twitacoin

Send Bitcoins over Twitter.

ChangeTip makes it easy to send and receive money online. Tip people, businesses and organizations by mentioning a recipient, @changetip, and an amount.

If you encountered a Bitcoin website or service and are not sure if it’s a scam or not you can use this test to get a pretty good idea about it.

Bitcoin Bourse trading system works like a secure escrow service, where Bitcoin Bourse holds and freezes bitcoins until successful transaction is finished between seller and buyer. Bitcoin Bourse is available in all European countries.