Random musings on random stuff.
This is a reply, basepost
I've often wondered this too as I don't use twitter myself. Someone helped me explain it best by saying she used twitter to broadcast messages to friends. For example, she could twitter from her phone that she's at a certain bar. Then she might have some friends who subscribe to instant notification of her twitter messages and they could meet her at the bar if they wanted. But that's much different than just calling people to invite them to the bar. It's more casual and doesn't hold anyone to an obligation of showing up at the bar. While this made sense to me it didn't make me jump up and start using twitter. (But maybe that's just because I don't have any friends ... kidding.)