Totally spent the whole day reading this blog:
Law and The Multiverse.
It's all about legal issues in comics, mainly in US law terms, and it's already answered a whole lot of questions I've been wondering about for ages- like who pays for all that crap they break? :P Especially since I have a student lawyer in Revelations who keeps wanting to show off her smarts :P Now I can make sure everything legal in my fics is correct without having to hit the books too hard :P (Which is actually a little difficult nowadays seen as hardly any libraries are open in the city... stupid quakes.)
I highly recommend it, even if you don't need it for fic it's really interesting and easy to understand.