This is just a placeholder post to point blog readers to my weekly column:  "Twitter Devolutions: How Social Media Hurt the Arab Spring." It’s based in part on the talk I gave yesterday at McGill University, which hopefully will be available on video soon.  The premise is simple: if we accept that social media played some part, however small, in the Arab uprisings, then what role might it have played in the turbulence and struggles which have followed?   More discussion to come, as I take in the various responses from Twitter and the blogs, but for now I hope you’ll go read "Twitter Devolutions"!