Truthfully, I don't think that's a particularly good idea. You're changing the thread starter's identity, probably not a good idea. Truthfully, I've never understood why so many are reluctant to have an avatar picture. Can someone explain how this is a huge security risk? I've never gotten it, and I'm pretty aware of computer security and identity theft issues.
Face recognition programs are able to use images. By its self not a big deal really I guess. Unless it is one more piece of the ID puzzle thieves may or may not be compiling.
I save non electronic contact for sharing personal info most often.
I also took a closer look at the widget in the members section of "the blue bar above", and I cant figure out how it chooses photo positions it dose??? Not alpha, log in time, community rank, or age. Maybe it's the persons last post time?