In my opinion, most of the respondents are probably married guys that can't think of a good excuse to get out of the house on a saturday night! Same with the respondents to MFM ads. There is an awful lot of BS out there on the net, with BSer's attached. That is where certifications might come in handy on the adult sites. Just my 2 cents (half an ounce of gasolene) worth.
Chip