Providers or clients... what is a good sight to advertise myself on right now???

Lana,

Try RS2K, they're reputable and will verify clients.  There might be some fee, but maybe the providers can answer that.  I don't know much about P411 or Datecheck.

As a hobbiest, I tend to look at the following quality sites, in this order:

Roomservice 2000 (www.roomservice2000.com)

Eros Chicago (www.eros-chicago.com)

City Vibe (http://chicago-escorts.cityvibe.com)

Rs2k is the  best place.They verify clients as well as putting your ad up...

A few site changes, too. Not sure if they have changed their ad policies or what, but I always watch their listings.

I think that being listed on RS2K is useful, too, for Chicago. Those are the two most credible places, since you need to be referred to get listed.

Zig