You mean before people started to look into him more closely? I also was very impressed with Groupon before they released their numbers and the amount of shares sold by insiders prior to IPO.
More information led me to change my mind.
My hope is that Groupon files an new disclosure in a couple months that has better numbers. That is the real solution that everyone is waiting on now.
Our minds can be changed again, just like they were changed with the first IPO filing. From my perspective, this would be a very mature and robust solution to the problem at hand.
http://www.nytimes.com/2010/11/18/business/18sbiz.html