I have been marketing Phone Sex on the internet and Craigslist for years. What I have found is that using teaser ads pisses the majority of the people off. You put some ad out acting like you are a regular person and then they get a number to call only to find they have to pay.

Some times you have to place yourself in the shoes of the people you want to call.

in my opinion - Tell the truth about what you are selling - you might not get as many calls, but a higher percentage of conversions.

I haven't been using craigslist because of phone verification but I use other classifieds sites and get decent conversions