Thanks to Kari for sharing this super saver idea!
I Crave Freebies is yet another site that shares great deals. Check out this link from earlier this month for 15 free Kindle ebooks.
Today's deal on I Crave Freebies (7/27/11) is $20 Groupon credit.
So, check out http://www.icravefreebies.com/ for lots of other deals too!