Love this! Barnes and Noble $20 Gift Card for $10! You can use it in the store or online. Instead of taking Brian to the local library, I like to make an adventure out of a trip to Petco and Barnes and Noble. I'm going to probably end up using this right away. And then wishing I had more. Get yours HERE!
On a side note... I really like the Groupon website. I've purchased off their website before and have no complaints. Just note that it expires in a couple months and use it all at once to avoid the $10 deduction if you use it on multiple transactions. As far as online deals go, those are pretty simple requirements to get such an awesome deal.