Excellent post!

There was an Event on Facebook. Friends are giving up their friends' personal data by RSVPing to the offer. Almost 10,000 people gave this company all their Facebook info about themselves and their friends. This company has possibly accumulated over one-third of a million email addresses for its future spam campaigns, or perhaps it plans to sell the list to other spammers. Such a list is worth more than a couple thousand dollars. Pretty good returns for the creation of a Facebook Event.