I see people working as "Escrow" in the forum. These people work like a kind of brokerage house in their bitcoin payments. And they get commission from the transactions made. I know that reliability is very important for this.
But who gives the title "Escrow"? Is there anyone authorized for this job?
There's no official/authorized job, from what I know. All they need is a highly trusted Bitcointalk account.
The idea is that such account worth a lot (if somebody would sell that, heh). They do this to help the community, not only to earn some money. But if they screw it up, they'll get negative trust and their reputation and account will worth nothing.
There are sites that work like escrow (I've heard of bitrated, never tried it out yet), but for now I would still trust more the established escrows from this forum.
For escrow we need companies that are really corporate identity. I mean, companies need to do this job legally on a legal ground. People are more comfortable when the company's identity and employees are known.