An even worse case occured here in Greece, where the owner of a rss news aggregator site was sued and forced to shut down his site, got all of his electronic equipment confiscated, arrested and as far as I can recall had to pay a fine, let alone having to spend a night in jail.

The reason for all that was that in one blog, related to the site only through the blog's rss feed, made a post with libelous remarks towards (according to) the plaintiff.

The greek authorities (or the plaintiff, I am not sure who first took this approach) couldn't prosecute the blogger because he used a US hosted blog service, and thus could not be identified. So the solution was to sue the owner of the news aggregator, which had a greek domain name.