What If Microsoft Had Invented Twitter (My Take On An Idea From Tsahi Levent-Levi)

My take on an idea from Tsahi Levent-Levi (seen through GigaOm).

P.S.: (Has nothing to do with this post) Thanks to @freenerd for giving me the hint about this TechCrunch post. (They missed attribution but fixed it shortly after my complain)