I think between PG2 and the plug in for Azuraus I block a good 80% of all known IPs. But still the ISP is the middle man so to speak. The can tell if you D/L illegally without being on your computer if they just monitor your bandwidth usage. Since your ISP knew the name of the movie its more likely that you got picked up by some company that put out a type of sting on that movie title. And I have heard that even though you block the IPs of bad places your IP information still stays with the tracker and if the MPAA or RIAA gets ahold of it they have there evidence right there.