I never found keyboard only navigation particularly hard :/
Maybe cause I've played too much Doom.

Oh, and I like how they kept the "Get Psyched" message at startup.

"Sorry, your IP address shows you are coming from a country that requires us to block access to this particular site."

lame :)

They're doing that?
^ Agree then.

Firefox would most likely experience lag. Chrome has the fastest JS engine so you probably won't have issues using that.