Bring your umm-brella.

If $250 is more money than it would cost you to take a trip to a hospital for Wal-Mart-on-black-friday level riot activity, it is time to follow @hiddencash on Twitter. That's usually how much can be found in envelopes hidden by an anonymous person or persons (maybe Jason Buzi?), after clues to their whereabouts are posted to twitter. 

Sources: h/t Gawker