Great post guys. I have used Groupon many times and the places I revisit are the ones that have excellent customer service.
I think an important factor to note is Deal Expiration date. Many businesses only give customers 1-2 months to redeem a certificate, if you span this out across a year you will save yourselves a lot of energy when the Groupon is about to expire.
It could be that the GPL license increases software adoption.
If Thesis was GPL, there would be a lot more Thesis powered Wordpress blogs out there. I think Matt attributes a lot of Wordpress' success to the open community the GPL allows, which evidently leads to more and more people using Wordpress as the platform of choice.
And like Matt said, if the members of the Wordpress community start thinking that its OK to not use GPL, it could be slippery for Wordpress as it will effect growth.
Then you should judge and upvote his post. Please do not tell people how to vote -- that itself is judging. Users are given the ability to upvote or downvote and the community should see that through. Its always interesting to me how many people jump in and try to establish rules on upvoting and downvoting. I'm sorry but every member of this community should upvote and downvote as they please.
I was trying to figure out how I can use Steve Blank's ideas on customer development. But my biggest issue was finding potential customers to interview. This post helps a lot.
I think an important factor to note is Deal Expiration date. Many businesses only give customers 1-2 months to redeem a certificate, if you span this out across a year you will save yourselves a lot of energy when the Groupon is about to expire.