There are 550,000+ apps that are used on Facebook. Seventy percent of users engage with apps each month. There are one million app developers. Zynga, the top app developer, made $250 million in 2009. Of that amount, $80-$150 million is estimated to be profit, more net profit than Facebook itself made.
Which are the world’s most expensive cities? The cities included on this interactive map are from a 2009 study by the UBS, which tracked the ups and downs of various places in the wake of the financial crisis. Many cities have changed ranks, with some cities become more, and others becoming less expensive. Currency devaluations played a a major role in the change of rankings, specifically in regards to emerging market cities