Anonymous's only relevance was Fox News dubbing them "Hackers On Steroids"
They were known for fucking with people on facebook when facebook had shit security and people picked weak passwords and they'd password guesss or reset passwords.
Then they declared "war" on many people almost all of which are still here. I was supprised Chanology lasted as long as it did.
The Anonymous phenomena only lasted because of the hype that generated intrest, and more people joining in with Low Orbit Ion Cannons.
There was also the HB-GARY fiasco. They got lucky, and that a contractor that existed to milk the federal government got pwned because their security practices are terribad.