Based on the way they've operated their business to this point, I have no reason to believe they have such a plan.

There are things we know, such that Groupon is known to negotiate very aggressively with local businesses to get the best possible deals. We also know that there's strong competition to Groupon negotiating with the same (or at least a similar set of) businesses. That fact alone suggests to me that Groupon will not be able to negotiate as strongly as they currently do--therefore their COGS will go up.

We also can see a trend where as their revenue has grown, their expense growth has actually outpaced their revenue growth. While that means they haven't found efficiencies that no doubt exist in their business, the fact that their expense growth is outpacing their revenue growth suggests that they aren't even LOOKING for those efficiencies.

Finally, there's the evidence that (like many tech companies before it) that investment up to this point in Groupon has basically operated as a ponzi scheme--taking new investments and paying that capital out to earlier investors. Sadly, that's a really dangerous indication of their real reasons for doing an IPO--raise capital so the last of the early investors can cash out.

I'm not saying a business like Groupon can't succeed and can't have a legitimate IPO--but I see no evidence that Groupon is really that business.

The barrier to entry for Groupon competitors is low and there is no cost for both consumers and local businesses to switch to competitors. Based only on that I don't see much hope for them long term.