Discussing in court what is or is not a "reasonable attempt" will keep lawyers in clover. No offence, but Acadia's argument sounds like saying that if you can't get at the actual culprit, find a scapegoat instead: somebody has to pay, even if they obviously aren't responsible. Q:"The only recourse you have are the site owners, site moderators, site host (if they aren't hosting it themselves) or the perpetrator's ISP, which isn't available to you as a poster."