I gave the rest out to clients this year, so anyone who does NOT already have a Google Adwords account (it has to be a new account in order to get the credit) just shoot me a message--first come first serve.
No catch to starting up the account other than you have to deposit $5 with Google and then they'll give you an extra $100 to promote your business, website, etc. using Adwords pay-per-click.
You only have 48hrs to activate to the account otherwise I'll give it out again to someone who will use it before they expire.
PS - I'll update this thread once all of the credits are gone.