Pros
No dress code, relaxed office environment, great benefits, and you work for a company that has the ability to directly change someone's life for the better. Business itself is good, and for some people, opportunity abound. To be one of those lucky few, you must know the right people. Some coworkers are very bent out of shape about this, but I think it is because they didn't realize it until it was too late for them. To me, this is the way of the world in virtually all corporate landscapes. Depending on which team you land on, you could have a really great work-life balance and rewarding career.
Cons
Disorganized management and constant reorgs for no real reason other than to avoid actually promoting people. Several coworkers have been blatantly told that raises and promotions are only given at year end or not at all, while simultaneously quietly changing the title for other employees on the same team. There is a culture of secrecy at the management and executive levels that alienates everyone else. Also, there is an expectation of 24/7 work hours, working on vacation, and other work/life balance issues. On some teams, you will end up a slave to Match with a boss who expects constant access to you at all times, working vacations, and dictates a dress code even though Match has none.