Patton Oswalt, a tweeter who trolls (read: "a Twitter user"), attempts to make peace with his haters by staging a (fake) "Patton Oswalt hater" group and then attending to expose them as the unsightly, festering oozes of human scum that they are, dammit.
But! The important lesson this Funny Or Die bit imparts is that trolls are people, too, and they are capable of substance beyond their human desire to say something mean on the internet. People like...Patton Oswalt.
Good lessons all around.