I think Yahoo (YHOO) made a very intelligent move protecting their patent and going after Facebook at this juncture.  They made a similar move when Google (GOOG) was going public and they ended up settling which I think is likely in this case as well.  Facebook doesn’t want litigation like this lingering around during the IPO, but then again they do operate quite different from most other firms.  It could be another piece of value to add to a Yahoo sum of the parts evaluation.

http://www.bloomberg.com/news/2012-03-27/facebook-says-negative-outcome-of-yahoo-suit-could-be-material.html

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