Cudgelling the old grey matter recall cells into operation, wasnt there a case a few years ago in which Demon had to take down a webpage or remove a newsgroup posting that one of their customers put up because it liabled some Professor.
Good old google, found it
http://www.isp-planet.com/business/libel.html
Quote
"Dr. Godfrey won his case against Demon and the firm agreed to pay Godfrey £15,000 along with £250,00 0 to cover his legal fees. In the U.S., the same e-mail post would have been considered simply poor e-mail Netiquette."