160 Free Game Vouchers
Green Man Gaming (who are an online PC gaming company who works in a similar way to Steam) have launched it's forum and to celebrate they are giving away Free Game Voucher codes for the rest of the week.
All you need to do is visit the forum, wait for a new topic to appear and it'll include a partial code with 1 digit missing (believe it's a number between 0-9). It's first come, first served as it were so you'll need to be lucky/quick!
Forum link is: http://forums.greenmangaming.com/
(HOTUK Deals wouldn't let me link as a deal).