When I signed in with Pprune about 3 years ago, not being too computer literate, I ended up with my name appearing and not the nickname I thought I had entered. It proved to be a very good mistake in that folk from around the world whom I hadn't seen or heard from for up to 35 years, contacted me to check if I was still alive. Fortunately I was, so I enjoyed catching up on old times.
As I don't make rude comments, I don't mind who knows who I am.