GFE means all the acronyms and, I assume, PSE adds perhaps a lot of noise and toys.  But sometimes the difference in asking price between these two services, by a single provider, is so big that I wonder if something else is involved.  Some other boards have hinted/speculated it's code for BBFS, which I'm skeptical about but I wonder what others might think.

By the way, the one honest-to-goodness porn star I actually had a session showed me a lovely time--but I would only describe it as GFE.