Here's the overview of Facebook that is found on their profile page on Google Finance:
Facebook, Inc. (Facebook) is engaged in building products to create utility for users, developers, and advertisers. People use Facebook to stay connected with their friends and family, to discover what is going on in the world around them, and to share and express what matters to them to the people they care about. Developers can use the Facebook Platform to build applications and Websites that integrate with Facebook to reach its global network of users and to build personalized and social products. Advertisers can engage with more than 900 million monthly active users (MAUs) on Facebook or subsets of its users based on information they have chosen to share with the Company, such as their age, location, gender, or interests. It offers advertisers a combination of reach, relevance, social context and engagement.
For the sake of reading too much into something:
Isn't it interesting how in the first sentence, Facebook lists users, developers and advertisers equally as beneficiaries of its “products” that “create utility”? Apparently we're all in a big ol' Circle of Life, each equally reliant on each other and doing so via Facebook's “utility”-creating products.
This just seems a bit odd to me – Facebook wouldn't exist without its users and the core functionality of social sharing. 3rd party developers and advertisers are relatively new to the party; necessary evils in order to allow Facebook to demonstrate a sound business model, but they've been given equal prominence in the description above as if there's some open and happy relationship between, for example, users and advertisers on Facebook.
Another random spot: users and developers get one sentence each, whereas advertisers get two. That's double!
In the words of Marco Arment, “Everyone has their bullshit, you just have to decide whose you're willing to tolerate”.