Hey Newbies (& Jr Members)! I want to give you the opportunity to earn some merit by using your Bitcoin client (or whatever you use). There is a great guide linked below showing you how to sign a message. If you can sign a message from your Bitcoin address with your bitcointalk username, I will send you merit. Enjoy!
https://bitcointalk.org/index.php?topic=990345.0Example:
Address: 1BitcoinAddressGoesHere
Message: Im OgNasty and I can sign a message.
Signature: 1BitcoinSignedMessageSignatureGoesHere