xbytor writes: FireTabs (http://www.firetabs.com) joins the list of guitar tab sites that have been getting threats from the National Music Publishers' Association recently. The entire tabs collection was pulled from the site in August. Scans of the letters threatening DMCA action were posted a few days ago.
Hopefully one of these sites will have the capability of challenging the publishers in court and getting the issue of tab copyrights addressed one way or another. To the best of my knowledge, it's apparently still an open legal question.
I did my bit and donated to the cause.