I'm no fan of facebook, but I understand where people like the guy Jazzmammal encountered are coming from.

Shakers and movers are often of the opinion that it is publicity that makes you a star, not talent. They've proven it by giving air time to people who are marginally talented, but whose message matches what they want the world to hear... and the person gets well known.

But it costs them money to do the PR. What they're looking for now is the act that has already done the PR and already has a following that will benefit them at little or no risk

And why not? There's an abundance of acts knocking themselves out for just a little opportunity and recognition. Why would they not pick cherries?