I was going to say 4chan, but I think that's only where I found out about Warband. I'm fairly certain I found out about cRPG from the talesworld website, browsing multiplayer mods. The description told me it's like singleplayer but multiplayer, so I was sold right there.
Only wished I could have experienced old cRPG for more than 2 days. I'd just saved enough money to buy my first bow back then too, and randomly killed some full plate guy accidentally because I was trying to shoot the peasant teammate next to him and hit his head instead. Peasants have it way too easy these days.