Right now, I can get music, software, movies, pictures, or any other material in digital format on the net for free. Granted, I need to scan everything because they definitely aren't coming from a known/trustworthy source, but it is still ripping off someone, somewhere. I'm in favor of something in place to prevent this from happening, aside from far reaching bills like this or RIAA witch hunts.
If the bills were re-written to allow companies like Google no additional work or overhead, Congress would pass it easily and we wouldn't have much of a say. The media companies lobbyists didn't anticipate the incredible backlash that is coming from Google/Wiki/etc. I guarantee that a rewritten SOPA that minimizes large companies liability is going to pass Congress eventually and there is little we can do about it.
It reminds me of a line from a movie, "It is one big s**t sandwich and we all have to take a bite." At least people with a clue will know how to bypass many of the 'safeguards' they may put in place.
