Techgage has posted a review of the slot cooler from Antec, the blue VCool.

You have expensive toys, and want to prolong the life of them as much as possible. One of the best ways to do this is to take extra steps to keep your components cool. Antec has a solution for your video card, a double slot cooler. They say that use of the VCool can decrease your GPU's temperature between 5C and 15C

Antec VCool Review