Ooh, found these two articles. I read them way back when, but forgot about them. They're pretty good, though old:
Copyright 101: A Brief Introduction to Copyright for Fanfiction Authors -
http://www.whoosh.org/issue25/lee1.html
Fanfiction, Novels, Copyright, and Ethics -
http://www.whoosh.org/issue62/ecks2.html
Here's some other stuff

Lois McMaster Bujold -
http://fanlore.org/wiki/Lois_McMaster_Bujold
OTWs FAQ -
http://transformativeworks.org/faq/legal
This one made me think. Why didn't Stephanie Meyer sue EL James? -
http://kittyb78.wordpress.com/2012/0...ion-vs-novels/
links to Cezperanza (sp? I know her, but can never spell her name

) -
http://www.squidoo.com/fanfiction-stories-archive
Oh No They Didn't -
http://ohnotheydidnt.livejournal.com...ad=11861741141
Fanfiction: A Form of Flattery or a Form of Infringement -
http://themidnightnovelist.wordpress...-infringement/
I separated that last one because it talks about "Fifty Shades of Grey" by E.L. James. I'm sorry, my personal opinion is that James should not have been able to profit off the work. Why, considering the names are changed and it's in a different setting? Because the fact that it was fanfiction was used as a marketing ploy.
If no one had ever known that it was fanfic, I'm sure the story wouldn't have done nearly as well. But James already had a big fanfic following, then was like "Look, it's becoming a real book. Tell everyone to buy it!" And things blew up from there.
I could grab up all my fanfic, change some names and some settings, and probably make a good go of it, but that's just crossing the line to me. Does anyone else think that there's going to be big trouble in the future, or am I just paranoid?