I am almost always miskie, though occasionally I can be found as o0miskie0o or miskiecat which is in reference to a website from the distant past, Miskie's Catbox. ( The name changed to Catbox Forums, Then to Chaos Forums, which Later merged with Koffdrop's Waste of Time, which then settled in as Downwardly Mobile. )
As for anonymity, I really have none - One can find all of my details within give or take 5 minutes.