Meg Cabot has written a wonderful entry describing her jealousy that one of Susan Juby's books got banned in Texas.
I even have a whole speech written up in case it ever happens, so I can remember to thank the people who helped get me banned (my publisher; editor; friends; husband; parents who raised me with no idea that the stuff we regularly talked about in my house could get you banned if you put it in a book).
And then she links to Susan Juby's blog; Susan has her own thanks to offer. Susan also has a link to the ACLU report where you can read why these books were challenged or banned. (My personal favorite was The Emporer's New Clothes which was challenged because the emporer's naked butt is shown in an illustration.)