i used to use bananatrans.com.br which had a nifty search feature but looks like they changed the website recently....

http://www.distintas.net/ is another the issue is finding someone that can speak english (unless you can speat portugese)

http://pt.distintas.net/city/brasil/Rio_de_Janeiro

the only person i recognize is renata davila (you can see her videos online)

but you know actually i liked seeing GG's when I was there.  It's about $$ or $$$ GFE usually and they basiclly stay over for the night....  There was a club out there a few years ago called Help, it was a regular nightclub but it was understood that all girls there were working girls, you chat them up and get to know them etc, i think they tore it down though.

Try this site. Even has a search for ladies that speak English