Reporters' Roundtable: Checking in with Facebook and Foursquare[ Fri, 03 Sep 2010 15:45:00 PDT ]VCs are funneling funds into Foursquare, Gowalla, Loopt, and other apps that let users check-in and then broadcast their locations. We find out why on this week's show, featuring Claire Cain Miller of The New York Times and Adrianne Jeffries of ReadWriteWeb.