Pros
Free lunches once a week. Since so many people left/got laid off, it gave you the opportunity for growth/leverage for an early promotion to keep you around. Some great people but with constant drama in the office, that could only go so far.
Cons
Minimal managerial support with a very blase attitude about things. On my way out, I was frequently told "things are going to get better" for months to no avail. The only thing management was good at was dragging their feet. Management is very unprofessional and clearly plays favoritism. Company does not foster a help-each-other culture and it was very each-man-for-their-own. A lot of internal bickering between teams. With recent acquisition, people are lining up out the door one by one. Each week, the question is "who's leaving this week?" leading to a negative workplace environment. No work culture or interaction between teams, this is a very work is separate from personal. With so many people leaving (the SF office went from 110 to less than 50 people within 11 months), work continuously gets piled on you with no intentions to backfill roles. The company has a whole has a pretty bad reputation in the AdTech sphere for its fraudulent practices (see AdExchanger article regarding lawsuit with DataXu). Purchasing a multitude of companies disjointly for the sake of buying companies with no real goal.