Look who came over! Awesome!
I hate using desu and Masu but the reality is, that's how people talk when they tak to strangers and I'm not very well acquainted with any of the Japanese users, we just occasionally upvote each other.
Look at their posts and youll see what I'm talking about. I don't use these forms in person much because I don't conduct business in Japanese and I hang out with alcoholics, but it is still common, even among some of my alcoholic friends. People don't talk like they talk on manga unless they are with their busy buddies. I try to make everyone my buddy but it takes time!