As if to make the point that Twitter does not rule the roost (yet), on Wednesday Mark Zuckerberg, the CEO of Facebook, announced that Facebook had welcomed its 200 millionth member. To mark the occasion, Facebook is partnering with 16 charitable and advocacy organizations to create and sell gifts through the Facebook gift shop. Go there now to do your good deed of the day.

Brian Solis usefully reminds us that not only do people worldwide spend 3.5 billion minutes on Facebook every day but also – and I believe this provides a useful perspective – that it took 20,000 years for the population of the world to reach 200 million. One can not help wondering if it might have grown a little faster if it had been enabled by stone-age Facebook hook-ups.