Another social media facial recognition milestone (the old-fashioned, crowd-sourced version), via Dave Winer
There are already loads of photos on a Facebook group and Tumblr set up by Vancouverites to out the rioters. There are also pictures all over Twitter, where the mayor and police have issued tweets asking people to preserve their videos and pics of the rioting.
Uploading images is one thing, but authorities also need people to snitch out their associates and tag the photos. It looks like that's already happening. Inevitably, some innocents have already been incorrectly dragged into the social media manhunt.