Yandex surpassed Bing on the number of monthly search queries in November and December 2012. You might think (as I first did) that it happened in some local market, say ex-USSR territory or something. However, the figures are for the worldwide number of queries.
Now that’s just embarrassing. You would think with all the money Microsoft throws to buy users, they’d get higher in the online search game, not lower. Congratulations to the Yandex team though!