that so many people care is really nice. i hope he is ok. if i were concerned myself, i'd comb google and forums in which he was known for any publicly available information i can find. if i had a name and a proximate location, i'd probably scour telephone books too. and i'd ask people who had previously worked with him (if there are any) whether they'd heard from him, whether they had a contact address, etc. this type of situation can be really worrisome. however, i'm with mizrael. especially since the person was so private that he didn't even let people know his legal name; that strongly indicates that he would not like to be contacted by random site admins. i see lots of things wrong with admins using the information i had to give for purchases to trace me for reasons not related to those purchases, and i hope renderosity admins don't. when i worked on the livejournal abuse team we were not allowed to contact individuals at their private residences for any reason at all. we were only permitted to call the police and give the police personal information of a person if we had clear evidence of imminent danger to the person's life, such as a suicide post giving details like "tonight i will kill myself. i have the pills, and my parents will be out of town.". i thought then, and still think now, that this was a sound policy. people's right to privacy should trump almost all other interests other people might have. if people wanted us to know more about them, they would have told us.