Shit, this is a funny topic.
It's only racist to say nigga or nigger if you mean it in a bad way. I say nigga to some black people b/c we know each other. But when I say it I'm always kiddin. I don't go and say something racist to anybody. I'll fuck around and say nigger on this site, but I'm not puttin anybody down. If I said "Fuck you nigger, go pick me some cotton" now that is a racist comment. It's just the net, if you get offended by an indirect slang word on the net you got issues.