Quick UI gripe - I'm not crazy about the "text inside the search box" UI thing. I used it myself in a few places, but found that lots of people automatically click on the search box, and their text disappears, meaning they have no idea what they're searching for. Much better to just add a label before the search box.

Another option is to keep the text until the users actually starts typing, but I haven't tested that option too much - I'm afraid it might be confusing for users, who don't realize they can start typing to clear the text.