some of both, I have a 'list' of Acheson names and contacts that exchange data about the Acheson family. Plus I have done a little research at libraries back east, and of cource some comes via the message boards like this. There are the Grouse Lodge Achesons, the Scotland Achiesones, etc. and each often provides a link or something to research. I try to stay in my line, but often add something I see from someone else's tree that I have been able to confirm.