Like paid book review services that seem to be springing up everywhere these days literally overnight, there seem to be a ton of folks calling themselves publicists. The truly good ones have been doing it for years. PJ Nunn is one of those people who has been around for awhile. She has a few thoughts about what a publicist can and can't do for you here.
I have told you before to go read her blog. I am telling you again. The piece is well worth your time.