Pros
If you work on the search side of the Carlsbad office, you'll probably have a good experience and learn a lot. If you work on the mobile/ad side of the Carlsbad office, your experience will be good if you work on the mobile development team. If working in the IT or Ad teams, your experience will be good as long as you possess the following traits: childish, inexperienced, egotistical, loud, disrespectful, backstabbing, dishonest, and highly critical of anyone who doesn't have the same in-your-face personality.
Cons
Management and the engineering elite on the mobile/ad side of the Carlsbad office are all buddies who are very secretive, and have no desire to communicate appropriately. Moreover, the workload is very lopsided, with the engineering elite (aka: friends of the management) freely coming in super late, leaving super early, and taking many days of off-books vacation, while pushing most of their workload onto the very few hard-working smart people who actually care about trying to make this flailing company successful. Also, the company doesn't generate revenue, and they've put all their eggs in one very brittle basket... The problems in the ad group are systemic, and they will eventually collapse the company if management continues the trend of entrusting that group.