Bodog

Bodog, an online gambling company, started to lay odds on whether Facebook will first attract 1 billion users or make an initial public offering.

Well, each of the outcome is possible and seem pretty sure things. In fact, Zuckerberg figures that hitting that ellusive 1 billion user mark is practically a sure thing. "It's almost guaranteed," he says.

So, Bodog is asking in reference to Facebook's user count, "[W]ill they reach 1 billion before January 1st 2012: Yes Evens, No 8/11?"