I'm going to be totally and completely petty and take advantage of the fact that plagiarism is the current topic of conversation in fandom and recommend a great work of fannish history:
The Cassandra Claire Plagiarism Debacle
Written in 2006 by white_serpent in the bad_penny community on journalfen (which was a journaling community where a lot of people fled after various strikethrough incidents on livejournal).
It's an incredibly well-researched look into a notorious early aughts fannish incident involving someone who later became a successful, best-selling author. And it is fascinating!
And a bonus recommendation: donate to the Internet Archive/Wayback Machine! They're the only ones keeping our fannish history accessible on the internet!!!!
https://web.archive.org/web/20080302135343/http://www.journalfen.net/community/bad_penny/8985.html