Links
There is a large amount of information on the internet regarding copyright and trademark takedowns and other relevant issues. You could spend hours sifting through it all. Here I have compiled some of the better sites for your convenience.
Brief article on eBay Trademark takedown abuses
http://overlawyered.com/2007/06/trademark-abuses-of-the-month/
Great article & reader comments on retail stores that ban eBay sellers
http://blog.auctionbytes.com/cgi-bin/blog/blog.pl?/pl/2007/8/1186587390.html
Responding to a DMCA Takedown Notice Targeting Your Content - (from Citizen Media Law Project)
http://www.citmedialaw.org/legal-guide/responding-dmca-takedown-notice-targeting-your-content
Some detailed information here on Wikipedia
http://en.wikipedia.org/wiki/OCILLA
Very good article written by a victim or repeated bogus takedowns - explains how fight eBay takedowns
http://www.rickdrew.com/fighting_ebay_VERO_DMCA_takedown.htm
This article lays out the "Good Faith" protection given to reporting parties in copyright takedown situations - a very good read
http://www.lctjournal.washington.edu/Vol2/a015Rozsnyai.html
10 Big Myths about copyright explained - Well written, brief and to the point.
http://www.templetons.com/brad/copymyths.html
Wikipedia on trademarks - detailed information about trademark law
http://en.wikipedia.org/wiki/Trademark
A letter posted on the web from an ebay takedown victim
http://rickdrew.com/ebay_vero_scammers.htm
Good example of a bully corporation trying misusing the DMCA against an eBay seller
More abuse of the DMCA with regard to online software sales
http://www.infoworld.com/articles/op/xml/02/06/03/020603opgripe.html
More on unfair trademark takedowns
http://weblog.infoworld.com/gripeline/archives/2007/06/are_unfair_take.html