Sar, he has been around for a while... about 3 years I think.. he was involved with a site called freetgpsubmitter.com
I think the TGP community would know the name pretty well.. I don't know if he can be trusted or not personally.. but from what I have seen of him I am very impressed with his ideas.
BTW.. I have tested out remotethumbs in a small way.. I have logged what they are transferring and dont have any major concerns about security based on my poking about.
I dont run TGP sites but if I did, this is an awesome tool for anyone running an all thumbs tgp imho. I added a TGP section to this site to test how it converts
http://www.sleekssickestporn.com/galleries/ .. there was no way I would have bothered if I had to maintain data for 1200 new thumbnails and hosted gallery links that change every day.