&gt; What killed Persona was not tech but the lack of traction. Developers loved it but failed to use it.<p>The idea was always that Mozilla would ship native integration in Firefox. There were very very pretty mockups going around and everyone was holding their breath for that to happen.[1] Even announcing they would ship it in the next version would mean 1) it’s stable now and 2) Mozilla is behind it.<p>My guess is Google (their sponsor at that time) made them drop it because they were preparing to launch G+.<p>I know it’s a conspiracy theory, but it frankly makes more sense than all those other non-reasons I keep hearing about in this thread.<p>[1] <a href="http:&#x2F;&#x2F;www.extremetech.com&#x2F;wp-content&#x2F;uploads&#x2F;2011&#x2F;07&#x2F;firefox-account-manager.jpg" rel="nofollow">http:&#x2F;&#x2F;www.extremetech.com&#x2F;wp-content&#x2F;uploads&#x2F;2011&#x2F;07&#x2F;firefo...</a>