. i mean a lot of them fancy themselves as social avengers of sorts..
Social avenger in what aspect? As far as fighting for things like the ability to print the decss code, yes. But social avenger like a batman-esque reference I don't think is accurate. Much in the same instance that you don't see armies of hackers trying to use "hack" away terrorism (as though it were possible), they really aren't an attack force or army.
Fighting for rights, yes, but some sort of avenger.....I don't think so really.
As a side note spammers often use unsecured servers to relay their mail through so really there isn't any big operation or company to attack in most cases. One guy sitting in his living room using a piece of software and an unsecured server in asia would be a typical example. If you destroyed his windows installation he would run a restore cd and be back up in an hour so really there isn't anyone to go after.
One of the funniest User Friendly comics though I've seen has Pitr going after some spammers. The comic then cuts to the spammers headquarters where someone is trying to login and you see their screen that reads something like:
spamgod@spambox%: su
error: user "root" does not exist
Its funny in a nerdish way.