Straight from the horses mouth, how Twitter came about. Love the fact they were sitting on a slide at a kids playing, eating Mexican food, when Jack first pitched the idea to his team (and I never realised the 140 character limit was imposed to reduced their SMS bill).

Also from the past, Michael Arrington wrote at that time:

"There is also a privacy issue with Twttr. Every user has a public page that shows all of their messages. Messages from that person’s extended network are also public. I imagine most users are not going to want to have all of their Twttr messages published on a public website."

Really...? ;-)

Hat tip to Jordan Willms.