I wish people stopped talking dirt about these guys and their IPO. Investors aren't being forced to buy the stock, consumers aren't being forced to buy groupons and merchants aren't certainly being forced to participate in their program.

While Lefkofsky is selling his stock at will, you should note that the CEO is holding on to most of his portion of the company.

Everybody and their cousin worries about their expenses, and that is totally understandable, but let us not forget how many acquisitions they have made in the past. If most of the money they have raised went into founders' pockets, then most of the income they have made went into buying other sizeable companies and paying some 7000 employees.

There are 15M small businesses in the US. Groupon made nearly $3B last year servicing only less than half a percent of those. For better or for worse, Groupon could be bigger than Google and turn a solid profit.