I checked out an old girl friend and with very little effort I was able to find out a tremendous amount of information about her these days.
What she has been doing for the last few years, where she has been working, where she has been living, How much she paid for her house and the taxes she paid and much more.
It seems these days you really have to think carefully and hard about what kind of trail you are leaving on-line.
It might be a good idea to start thinking about creating all kinds of legal entities and foundations and other structures to preserve some anonymity.