I'm copy/pasting the following to everyone on my friends list in case you haven't heard about it and no my account hasn't been compromised, this is a real issue and thats why I am sending it to everyone on my friends list. Feel free to verify that its me. Thanks and pass it on!

November 10th, 2011 @ 5:37pm

Steam Hacked, Valve Investigating Possible Credit Card Theft
"A message sent just now from Valve Corporation head Gabe Newell says credit card numbers and other personal information were inside a database compromised during a defacement attack on the Steam forums this Sunday." - More...
http://kotaku.com/5858473/steam-hacked-valve-investigating-possible-credit-card-theft/

In Short:
- Pass this on
- Change your Steam Account Password, Steam Forum Password, Email Password & watch your credit card &/or bank statements closely