Ask

My parents.

I post under my real name both out of nostalgia for usenet (the original federated forum) where it was customary to use your real name in Germany. And to be able to post identifying information without fear of being "discovered".

With enough data points and a little investigation it is ridiculously easy to identify a single user. My wife demonstrated that to me a few years back when she identified some anonymous bloggers and turned out to be correct. Otherwise I might be tempted to post really private stuff under the misguided impression that I am anonymous.