Thanks for the reply. There is a problem with glass door reviews though. By and large, only disgruntled employees will visit and post the information. Satisfied employees are less likely to visit the site and post reviews, thus skewing the numbers.
You will see some positive reviews. The negative reviews tell you what you should keep your eye out for. Counter their reviews with companies of similar size, say "SalesForce" where I see a great number of positive comments.