PC World reports that at least one epublisher is going after pirates, all guns blazing. Chinese epublisher, Shanda Literature--founded in October, is taking the largest Chinese search engine (Baidu) to court over ebooks that are accessible using that service--and their are some reports that they have Google in their sights too.
Their argument seems to be that of search engines can provide warnings that a site might contain malware, or adult content, they should be able to provide similar warning that a site is likely to contain pirated material. And they are asking that search engines attempt to provide these warnings, not suppress the sites entirely or delist them.
I have to say, that seems reasonable to me. The vast majority of pirate copies are, after all, provided via a relatively small number of websites. And, as if often mentioned, if people want to pirate they will. But a warning and informational notice would at least ensure they cannot say they "didn't know" the copy they downloaded was illegal.