Pros
First let me say, I am gainfully employed here and am doing well in my performance however I do feel it is important that folks get the truth. CoStar information database is AMAZING. A great tool, really. The employees are good hearted and hard working folks that care about the clients. CoStar has done an amazing job of monopolizing the market which is good and bad (for the client and sales staff). If you work on the Apts.com side you do very well as they pay you up front what you earn - and it is an easy job. Great brand reputation and certainly once you work here for a year everyone in the industry want to recruit you (assuming you have proven to be successful).
Cons
Corporate Culture SUCKS! The company and CEO put on a front that they care about the employees and customers, but they don't - they really only care about the stock price. CoStar has figured out every way to take from the sales team including just because management says.. I've never had such an experience. You literally have to watch your back or someone internally will come after your money, or corporate will decide they are cutting someone off, or perhaps your client doesn't hit 100 page views or God forbid you have one pad month you will pay for it in 3 months commission check. Not to mention that they won't allow you time off at the end of every quarter, do not give any Christmas bonuses (however they did spend a million dollars on gifts to other companies clients). I am sure that money was the money that they withheld from their overworked under paid and appreciated sales team.