You may ask Nauseated for this one, who can give the best explanation to you.
Pretty much in general, you can ask serious math questions that possibly only require an entire unique mind, or try to answer some of the math questions on the forums.
And there's also the Calculator around.
According to Titanium Rome's world (for God sake), he says you can start a math empire and try to defeat some of the math masters, also going to math warfare, and, become the best math king in the forums, and the ruler.
Some people are okay with it, some are completely enraged, but either way, he is like obsidian. Once he rises, he is here to stay.
And then there are campaigns for Moderator, although it happens rarely.
And you may use it like Face Book, just don't goof around too much otherwise mand CPhill catch you busted.
And that's pretty much it.