I have only one account, and I don't need any more than one account. I don't pretend to be someone else or hide behind a fake persona. Where it's possible, I always give my real name against any nick/username, although to be honest, I've used dickturpin or dick_turpin for over 20 years, so most people know it's me.
Having said all that, I have recently started using SredniVashtar on XMPP and IRC and my Friendica instance, but again, all my friends know it's me.
RE: Hive, Steem, Twitter, Facebook