In truth, this is a horrible way to get information. I can tell you that from the view of both a houseboy and employer. In truth, the only people that have the best things to say about a person are still with that person. Otherwise, it's just negative information, usually not true, that is spoken by some bitter guy that didn't get what he wanted. I have even noticed and replied to negative lies about employers that I have been a houseboy for before I became an employer myself.
Only you can get the best "read" on a person for yourself. If a person impresses you enough, meet him. Don't send him money or anything like that which you could lose, but getting information about a guy in these forums is like dating someone based on tips from that person's bitter ex.