I don't think I could have answered this issue any better than y'all have.
My beef with not being invited had little to do with anyone's issues over my escort agency. It was that I had that and I was trying to get into the Internet side. Like I said above, I had a couple small sites then and was doing some affiliate stuff. I wanted to learn more, but despite my pleadings to the contrary, I was told in no uncertain terms that a "pimp" wasn't welcome at a convention.
As far as the difference between a pimp and an escort service - Pimps string girls out on dope, slap them around, intimidate them, fuck them and in general, treat them like work animals. My agency offered health insurance, financial planning, cell phones, pre-paid legal services, child care, personal website design and promotion, etc. Our clients were executives, judges, doctors, lawyers, priests and couples, not low-life shitbirds looking for a $20 hand job in the car, in an alley. I never fucked even one of the girls who worked for me, never allowed dope anywhere around the office, nor allowed high or drunk girls to work and was nothing but professional with them and the clients.
That's the difference.