They claim to publish quality books, to reject those not up to their standards, and generally be a "traditional publisher" with the "difference" that they are looking for new talent instead of trying to suppress it like the rest of the big name publishers supposedly do.
So...
The world is full of bad books written by amateurs. But why settle for the merely regrettable? Atlanta Nights is a bad book written by experts. - T. Nielsen Hayden (Tor editor)
Atlanta Nights was written to prove the PublishAmerica would publish anything - and guess who made an offer on it?
I'm almost tempted to buy it. (It's now available from lulu.com, which is a legitimate printer and doesn't claim to be anything else; once PublishAmerica found out, it apparently withdrew its offer.) -- Who needs to be big and burly when you can just apply physics?