Apple sold 67m iPads through March 2012, and retains over 70% market share for premium tablets. Apple is aiming for the same long term dominance it enjoyed with the iPod, which maintained similar market share for a decade Microsoft and Google are taking radical steps to try to change this. Both are now making and selling their own hardware, while Google will sell a tablet at cost Microsoft and Google now have coherent tablet propositions, but they remain far behind on broader app ecosystems. Like Nokia, they are now back in the game, but they still have to play

Google+, the social network, has around 100 million users worldwide, although user growth appears to have stalled and usage is low on weak network effects

Facebook users, now 70% of the adult internet audience (excluding China), have no incentive to switch to Google+, starving the social network of vital momentum

Facebook is likely to dominate socially enhanced search, unless Google+ takes off, which seems unlikely