Wall Street didn't know whether to Facebook a thumbs up or a thumbs down after the company reported a small and very rare miss on revenue expectations in the first three months of the year.br Facebook posted earnings of $0.42 per share, beating the consensus estimate of $.40 a share among analysts polled by Thomson Reuters. The company fell short of what the analysts expected of its revenues — a lofty $3.56 billion —landing at $3.54 billion for the first quarter of the year.br Despite missing analyst estimates, Facebook revenue climbed more than 40 from the same quarter a year earlier, largely because of its successful transition into making money from smaller screens. Advertising revenue from smartphones and tablets accounted for 73 of Facebook's total advertising revenue for the quarter.