I don't know why he's the subject of bans and forum threads, but I'm seriously not having any troubles against Rammus. 4/5 games today, as with each day, had a Rammus on the opposing team. They didn't come close to winning a single time. There's only one thing I find about Rammus on Dominion that I find annoying - He rushes thornmail and you kill yourself on him harder than he kills you in 1v1 situations.

Other than that...I'm seriously not understanding the hate. He's in 90% of my games and never even comes close to being a deciding factor.