Dear Matt and Mar,
Base on the current standing, I can only assume it will be 'facebook' that you'll be using in just a few years... unless this new 'David' follows through and slain the almighty 'Goliath', but unlike in the legend, it will take years to fall this humongous giant.
I would recommend you listen to Malcolm Gladwell: The unheard story of David and Goliath, according to this talk Goliath didn't have a chance... haa haa haa, the shepherd boy was the dangerous one...
I remember another David, I am going to call him David the Diaspora (lol), of course when the opportunity came I'd signed on as fast as I could, the same for Google+ and now the same for this latest David.
The latest David is David the Ello... I have just submitted my request to join, hopefully they'll let me in, haa haa haa.