As is, providers can't really give away accurate information, they just give out the name of who ever is currently tied to an IP when a lawyer requests it, in a lot of cases, they wait upto over a year, and that IP has passed by hundreds of people so far. What's really funny is watching swarms and seeing addresses that are tied to CNN, and other corporate networks that have absolutely nothing to do with content. Nothing but a bunch of b/s in the end. And anyone that supports SOPA/PIPA, well, get the **** off your computer, and start using a damned IBM from the 70's, because those bills would have resulted in Microsoft, Apple, AMD, and so many other companies never existing in the end.
I remember awhile back I found a website that joined all sorts of swarms, it would log the IP of everyone, and what content the swarm was sharing. I entered my IP address (note, that the IP most places and swarms see, is that of a proxy, that a LOT of people on my ISP uses, as our modems are set to use it by default) you would not believe some the crap, and how many MILLION records they have of that IP, yet, my legit actual IP, shows nothing at all, and it actually tracked the downloads a friend of mine had going, and was 100% accurate. So no, the current systems all fail, and these laws do absolutely nothing other than cause even more harm in the end.