Pros
I have been at Overstock for a couple of years now and recently had a potential interviewee cancel because of the reviews here. What a waste. That potential associate never got to see the campus, enjoy a day with friends at Lagoon, listen to music at "Overstocktober", shop at the monthly on-campus Farmers markets, eat food from the on-site, organic greenhouse, relax in the Nucleus coffee house, push the boundaries of technology, experience a genuine Silicon-Valley culture in Utah, or work with some of the best people in retail. I saw the negative reviews too and I took a chance when I moved to Overstock. I don't regret it one bit. Don't just cancel your interview, come and find out for yourself.
Cons
Of course there are some cons to Overstock as well; no workplace is perfect. The building can seem a little sterile. Not all management is fabulous, some days there is no great choice in the restaurant. The grass on the lawn is a little long for soccer. As a non-exec, some leadership decisions sometimes seem a little strange. On the other hand, find me somewhere that this isn't the case and maybe I will consider applying...I will not expect a big rush.