Ok there was a vc funded comapny called KEEN
www.keen.com. THey were set up to get live advice, anyone could be an adviser. The areas that did the best were astrology and phone sex. So Keen split up into three sites:
Keen.com for astrology, NiteFlirt.com for Phone sex, and Ingenio for professional services like; computers and accounting and fitness.
I did not see the paypercall aspect I only know the live advice. Where you join and create a listing, you can also have a recorded listing which means instead of someone paying $2 a minute to talk to you on the phone, they are charged maybe $1 a minute and you give them advice on a recorded message. Ingenio gets 50 % and you get 50 %was the payout. SO $1 a minute -.20 connection fee leaves .80, you get .40 a minute so if you have a recorded message for 5 minutes you get $2 per call.
EBay for years has been a rumored buyer of KEEN but they did not want the adult side, so it was separated into NiteFlirt.
Right now you could set up a recorded listing about domains on your site, it would direct the person to Ingenio where they have to sign up first and then hear your advice on DOMAINS for example. KEEN and NiteFlirt have affiliate programs too.