Right now if you join Facebook and install the following application, they will send you an email with a code that you can use to redeem $100 credit with Facebook advertising.

Here's the link to the application which is free to install:
http://www.facebook.com/install.php?...b6bf3d35&v=1.0

I tried advertising with Facebook before without success. My ads did not generate a high CTR so they were disabled after generating just a...