Anyone who wants to participate in the USGS' felt-intensity survey should click on this link:
http://earthquake.usgs.gov/recenteqsUS/Quakes/usteak.htm And then on the "Did you feel it?" link on the bottom of that page. They'll ask you a series of questions to estimate the felt intensity, so that a map can be generated of the effects of the quake across the region.
Done.