Track the real time twitter levels in Austin Texas, during #SXSW levels roles to several hundred geo-tagged tweets an hour form within just .5KM square area.
I doubt anyone would be surprised that #SXSW is a major source of social media activity, but just how major is impressive.
The map above shows active social media sites in Austin. Note that the Foursquare icons are trending, not just checkins. And the Flickr images are popular images that have been downloaded many times. So we see for #SXSW event posts to foursquare and flickr are massive. Map made with the Happan.in app.
And twitter is very active all around the center of the city. All not surprising for the premier hipster techie event of the year.