Five short years since it started, Twitter has become part of the fabric of society for tens of millions of users who regularly tweet about their lives and experiences in no more than 140 characters. And it all started on 21 March 21, 2006 with the brief and banal tweet sent by co-founder Jack Dorsey. That first tweet simply read: "just setting up my twttr". For the last 10 days, Mr Dorsey has been ploughing through his archives to re-send some of the tweets he first sent out. He has also shared some of the e-mails and instant messages that passed back and forth between him and his fellow co-founders, Biz Stone and Evan Williams/Maggie Shiels, BBC News. More here.

Question: Does anyone out there prefer Twitter to Facebook? Why? Why not?