Foursquare's Dennis Crowley Tweets From Scene of Boston Marathon Explosions

Dennis Crowley, the CEO and co-founder of Foursquare, ran in Monday's Boston Marathon, but emerged unhurt after explosions marred the event. Crowley used Twitter to report from the scene of the incident

Crowley, who also used Foursquare to check in at every mile, sent his first tweet at 3:08 EDT.

I'm ok.about 20k of us in corral just before mi 26. marker. @chelsa ok too

— Dennis Crowley (@dens) April 15, 2013

Crowley then offered real-time description of the horrible events:

still stuck at mi 26. mom dad Michelle chelsa all ok.

— Dennis Crowley (@dens) April 15, 2013

FYI no one at mi 26 has any idea what's happening.

— Dennis Crowley (@dens) April 15, 2013 Read more...