You may or may not have noticed, but recently a number of 'social media' services have begun looking and working very similarly. Facebook is the poster-child, followed by google+ and twitter. Their modus operandi is to entice you to interact with family-members, friends and acquaintances and then leverage your interactions to both sell your attention advertisers and entice other members of you social circle to join the service.
There are, naturally, a number of shiny baubles you get for participating it the sale of your eyeballs to the highest bidder, but recently I have come to the conclusion that my eyeballs (and those of my friends, loved ones and colleagues) are worth more.
I'll be signing off google plus, twitter and facebook shortly. I my return for particular events, particularly those with a critical mass the size of Jupiter, but I shall not be using them regularly. I remain serenely confident that all babies born in my extended circle are cute, I do not need to see their pictures.
I will continue using other social media as before (email, wikipedia, irc, skype, etc) as usual. My deepest apologies to those who joined at least party on my account.