THIS. This so hard. When I was a wee thing and the Internet was new, you NEVER EVER EVER told anyone your name. Lassarina became my name in part because it is STILL drilled into me, on a level that is innate, that I do not give my legal name in any way ever. I will freely give this name to my real life friends, on the understanding that they NEVER link it to the name on my government-issued ID, because I still have that panic. Even with people I've known for years and have so much dirt on that if they lifted a finger out of line I could do massive damage. I still stop and think and say "do I trust you with my name even though I've already trusted you with intimate details of my life?" (the answer...is usually yes, but there were a few times it wasn't.)