Any of you in the decision making part of the business world must know at least one of these guys. Consultants and freelancers know them well.
The guy who doesn't really do anything, is at a lot of business lunches, never picks up the bill, knows a lot of people and gets 10% of anything that happens around him.
They can be handy, a skilled one knows when to bring the right people together, solving one or both peoples problems, or furthering their project. The worst of them are like serpents though, almost like business logic pick-pocketers, sometimes obnoxious in their bizarre rationale as to why someone should give them a small cut. Give him a lawyer with an ambulance chasing philosophy, and the only one making any money is your lawyer.