Sign up for Petco Emails and be Entered For a $500 GC

 This one is easy peasy sign up for Petco's email which has discounts and coupons for your furrbabies. 

Chance at a $500 GC for Petco.
http://www.petco.com/Secure/NewsletterSignupAll.aspx?source=sitefooter
Scroll to bottom  toward left hand side. Enter email and your done.