Backboards: 
Posts: 152
In response to "Indulge me please: off the top of your head, could you define briefly what Twitter is, who uses it, how popular it is, and its business model?" by Max

At least for Twitter and Facebook, their business model so far has been: ads

Or, lately, "sponsored content"

Responses:
Post a message   top
Replies are disabled on threads older than 7 days.