The reckoning over social media has transformed SXSW

Ev Williams last came to Austin for the South by Southwest Interactive Festival eight years ago. The entrepreneur, who previously founded Blogger and sold it to Google, was then a regular attendee at SXSW, where he relished an opportunity to gather with like-minded technologists who believed in the potential of the web. In 2007, he and his co-founders came to Austin to promote their latest project — a fast-paced, text-based social platform called Twitter — and it exploded in popular