Local businesses are "mobbed" by shoppers who come I to spend around 20$ each. Mobbers are also encouraged to speak to three people they have never met before.
Typically the money made at these events is put towards bettering the business and surrounding community in some way.
The event is basically a really fun way to network and to shop at some great local businesses.
Here is a link to Tallahassee Cash Mob events including the upcoming Olde Fields Cash Mob: