The recipe for activity is just people shitposting, tbh. You show them that, hey, somebody actually cares enough to shitpost, and they'll be like, "Well, shitposting isn't my thing, but I will post a few things and join in on discussion". Nobody wants to post to a dead forum, so let's get some life flowing through this motherfucker. Thread necro some dumb shit with some random chaotic shit. That'll end up in somebody's inbox and they'll be like, "Wait, wtf?!"
People get upset in a number of communities because I just, relentlessly shitpost, but honestly, if I turn my back and walk away? Nobody's going to say shit, and it's going to wither and die. I don't want that. Somebody has to take the hit though, and it may as well be me. I hate to sound like I'm taking credit for shit I don't really deserve, but I've seen this enough to know that this is how it works. Activity is created by, actually doing shit... so you post some crap you KNOW people are going to love to shit on, sure you look like an idiot for doing so, but you got people talking. Sure, people shit on you, but you can just, not let it get to you and keep on doing it. Eventually they'll maybe realize what you're doing. Maybe they, too, will embrace the art of the shitpost. Or maybe you'll just get banned because some short-sighted fuck has no clue what actually works. That has happened, with predictable results.
You simply cannot take yourself seriously. You facilitate other people actually posting better crap than you could by shoving some cringe-worthy shit out there, people need some cringe, it's like, a vitamin or some shit. All that said, you folks actually rock, and I don't want to see you fighting eachother. I don't care that some of you are horrible fuckwads, that's just your charm. Now, can we please show the OP the respect it deserves and not take our lame slap-fighting competition here? I like the spirit of the original post. You ate all the really bad folks, there's not a lot left to rage at.
EDIT: There's actually a really fun game on Steam, it's called, "Drunken Wrestlers 2", and it is just, terribad, hillariously bad. It's redeeming factor is that it relies on ragdoll physics and hilarious shit like randomly punching people so hard their torso falls off.