I think there.com. The business week article from 2007 lists three startups he was involved with. A recruiting firm he founded in college, There.com, and IMVU.com. IMVU is described on wikipedia as generating over 1 million a month in revenue, so it probably isn't that one. And the business week article has Eric describing There.com as having a focused strategy, but not having any idea what customers want.
Link to article:http://www.businessweek.com/technology/content/mar2007/tc200...