Pros
Groupon has global, quarterly 'all hands' meetings for all employees to join, as well as open Q&A sessions following the all hands. I've never seen this before at a previous employer, and it's really cool to have this kind of visibility to the senior leadership team, hear about how our work impacts the business, and check in on where we stand with company goals. This transparency is really important!
It's easy to get used to this aspect of the work environment as an employee/no longer find it exciting once you've worked there a while, but the office space is very unique (visually fun, open layout) and the dress code (or lack there of) is very liberating. I feel as though people truly come to work as themselves and are more inclined to collaborate in this environment - that doesn't get old. It's really freeing (still after 1 year) to get to wear whatever to work every day + come into an office that's laid back, where people are working hard, and it's a fun environment.
I also enjoy how the company empowers you to take ownership of your work. If you are self-motivated and driven, your opportunities are endless at Groupon.
A team I work closely with is the sales team. They've got a top notch 12 week training program that a lot of other companies don't offer. They do a ton of promoting from within, and it's inspiring to see the impact our sales reps can make on local businesses.
Cons
Groupon offers a strong benefits package, but currently there is no 401k match.
The company implements change (usually for the better) frequently, so if you aren't adaptable to change, this may not be the place for you.