The best thing is not to promote the escort side of things, UNLESS you can target that niche specifically. Start up a site all about escorts, and use the FEVKey links. Otherwise, use the MeetSafer links. These convert much better if you're focused on the 1-on-1 casual encounters.
Also, WebCosmo is a very blackhat-friendly classified ad site. They even posted a bit on the LEC forums, I guess promoting their site when they were new, saying that they knew all about LEC and it was cool to post as many ads as you want there.
Some of those guys are having a shitload of sales consistently on a daily basis.
Outsourcing the replies to emails would be best, but one thing I've learned about using non-native English sources: Over the internet, text is everything. Poor text, poor experience. Guys usually become disinterested after they're told 'i am sexy lover i make good time for u'.