And without even emailing their own customers in advance to keep them informed...how hard would that have been?
This is what the ISP copyright law is doing. Block whole sites, which will catch good usage as well as the bad. And keep it in a hush/hush mode. This is kinda the reason why I do not like blanket ISP blocks. You either have false negatives or false positives. You can never have a filter that is completely perfect.