[curiousfab]

On most sites I use my amateur radio callsign (HN is an exception). It's unique and very unlikely to be taken already.

[bhaney]

Doesn't the FCC maintain public records of callsigns and associated home addresses? Why would you want to immediately tie your personal address to most of your online accounts?

[curiousfab]

I may not be under the jurisdiction of the FCC :-)

Some countries publish full records, others just names, others nothing at all.

[zerohp]

Would you put in your real name and address on all of those sites?