Last year I enjoyed dropping in on the Class of 2007 -- first time authors of middle grade and YA books, banding together in promotional solidarity. It was a pleasure reading many of their fine books during my stint as a Cybils YA nominator (and it is also a pleasure to see gaps in my library's YA collection, where the review copies I donated are being checked out nicely).*
Now there is a Class of 2008, and they are currently hosting a Virtual Scavenger Hunt. With great prizes -- three of their own books!
*I have heard that in England authors get royalties every time their books are checked out from a public library. If true, it would be an incentive for authors to make lots of friends and have large families....on the other hand, if you don't know anyone with a library card, but keep checking your own book out, it defeats the purpose of having written it in the first place.