I don't want to comment on Groupon's business model per se, nor whether the concerns expressed are truly valid.
However, there appears to be a meta-concern brewing, which I summarize as "... people suspect there's a high tech bubble that is going to crack at some point. If/when this happens we'll all need a poster child to point to that helps explain and summarise the why/how/who/when of the bursting of the bubble." Perhaps Groupon is the leading contender to fill this role.
However, there appears to be a meta-concern brewing, which I summarize as "... people suspect there's a high tech bubble that is going to crack at some point. If/when this happens we'll all need a poster child to point to that helps explain and summarise the why/how/who/when of the bursting of the bubble." Perhaps Groupon is the leading contender to fill this role.