Apparently, Twitter users reported the Virginia earthquake faster than the quake waves moved in an outwards radius.
It shows how social media can outpace real time events.
A heat map of the frequency of tweets mentioning the word “earthquake” in the 5 minutes after the Virginia earthquake on 08/23/2011. The locations are self-reported by Twitter users and may be erroneous. The spread of the earthquake is approximated to be 4000 m/s.
