You repeatedly mention the “representative” list of works, which serves only to intimidate us as a search service. If you look at the Betamax vs. Universal case, the VCR was not deemed illegal since it is capable of legal use. isohunt.com is a content agnostic search service on indexing torrent links over the net, which is very much capable of legal use.
The implications here are significant, and this overall story is worth watching. Among other things, the dunderheads at the MPAA are trying to make linking to something illegal. That’s a dangerous precedent.