Its always an attraction to all budding entrepreneurs to have a concept started and take it to level like twitter and to
have BIG brands on board and own the same. As soon as any corporate grow big there is one thing which accompany them, thats the law suit. Click the links to know about the Law suits, both are for Patent infringement.
Details of Law Suit
Not sure how strong or light this case. But for sure, big companies has to face these things..
(Thanks to “The Next Web” and “Tech Crunch” for the articles)