[TheRealThing]

^^ LOL. When the twittersphere first went ga-ga over the use of the hashtag, I kept asking people I met why they used the 'pound sign' to label their social media fads. Which BTW, changed daily if not hourly. Never got a straight answer because like so many things today, it was a monkey-see monkey-do sort of thing which they could not really explain. I use it to razz other folks who use it.

It was always the pound sign to me.