Pros: -- Relatively smart colleagues. -- Great compensation and benefits. -- Fast career progression if you work hard and/or get results. -- Not difficult to find a team and work that you love. -- Real opportunity to make an impact on billions of people all over the world.

Cons: People at the management level is not always the best. Becoming slow and bureaucratic with large size. Aggressive hiring and expansion means the hiring bar/quality is going down.

Pros: Amazing coworkers, great compensation, a great work environment, and great perks.

Cons: The amount of work can be quite high from time to time, and finding/digesting all the information you need for your job can be complicated.

Pros: I have worked at the company for six months, but I like how the company works and operates. One of its policies is openness - this includes the famous weekly Q&As. Senior management tries to explain the background behind decisions, so you know why one thing or another had to be done. In general, everything focuses on making a product that would be better for customers. There have been a number of mistakes made from a privacy perspective, but there is a trend to improve this. This is a very good approach - instead of hiding mistakes, the company focuses on fixing them. After getting an offer, I was not sure about joining the company because of its reputation, but being inside, I figured out most of this is an exaggeration to create hype in the news. Work style is very flexible - you want to deliver new things, to make an impact, but from another perspective, it is not demanding, and it is far from a sweat factory like some other companies. It leaves time to learn something; you can attend many meetings remotely. Work-life balance is very good - it is difficult to improve it without affecting the work (someone should do the work, right?). There are a lot of young people around (ex-students, but usually with great knowledge), but there are also a number of experienced people - so aging doesn't seem to be a problem at FB.

Cons: Work style is open space. Many new buildings are awesome, while a number of old buildings are depressing, with dimmed lighting and gray ceilings. Some buildings have a quiet policy, but for others, it is not so good. I'd recommend remodeling old buildings (hack, paint the ceiling white so it will reflect the light, install better lighting, work with designers!), splitting large rooms into smaller, team-sized rooms, and adding more VC rooms so people could more easily get on conference calls without disturbing others. Another minus is the hyper-concentrated campus in Menlo Park. It is difficult to find good, reasonably priced rent in that area. It works well for young people, but for families with kids, there are a lot of other factors to be taken into account, so the Menlo Park area just doesn't work.