Facebook is poised to sell shares in itself, the first social network to do so.

Facebook said it would seek to raise $5bn (£3.16bn, 3.8bn euros) in the stock market flotation, valuing the company at between $75bn and $100bn.

The company’s has now revealed many of the facts behind all the pokes, likes and friends for the first time.What have we learned from the paperwork Facebook has filed with the US authorities?

Big Picture 

Facebook is an advertising company. Of its total revenues of $3.7bn in 2011, 85% came from advertising. And that is down from 98% and 95% in the previous two years.

The company makes $1bn in pure profit.Facebook has a total of 845 million monthly users and 483 million daily users.

Of its monthly users, half have used Facebook on their mobile. (But their are no ads on its mobile site, so it makes no money from them.)

The majority of its money comes from the US, but the majority of the users are outside the country.And the majority of its non-US revenues comes from western Europe, Canada, and Australia.The company generates 2.7 billion "likes” and 250 million uploaded photos everyday.

Zynga, the games maker behind FarmVille, single-handedly accounts for 12% of its revenues.The company has 3,200 employees.Lady Gaga may have the most popular page on Facebook - with 47 million "likes”.Facebook’s ticker on the stock exchange will be "FB”.

Money men and Women

Mark Zuckerberg, co-founder and chief executive, has 28% of the company - 533.8 million shares - which are worth $28bn based on an overall valuation of $100bn. He is 27 years old.

But Mr Zuckerberg is the controlling shareholder because of proxy voting rights. All in, he controls 57% of the shares.

Mr Zuckerberg’s base salary last year was $483,333 and, with bonus, he was paid $1.49m.From 1 January 2013, Mr Zuckerberg’s annual salary will go down to $1.

Mr Zuckerberg was memorably portrayed in the Oscar-winning movie, The Social Network. The Winklevoss twins, Tyler and Cameron, are not named in the filing after settling their legal battles with Facebook. Neither is Eduardo Saverin, his former friend and classmate.

Napster founder and early investor Sean Parker is mentioned - but his shareholding is not declared.Sheryl Sandberg, the chief operating officer, owns 0.1% of the company. She is the best compensated director at Facebook. With her salary and stock awards, she made $30.87m last year.

But with her stock options and depending on the share price, she will still become one of the world’s richest women. She has 38.1 million shares that have not yet vested that will do so from October.

David Choe, a graffiti artist, decorated Facebook’s first offices and took stock instead of cash as compensation. The New York Times reports the stake could now be worth about $200m.

The singer Bono is also rubbing his hands. Elevation Partners, an investment firm he co-founded, spent $210m buying Facebook shares in 2009 and 2010, which could now be worth $800m.

Mr Zuckerberg’s friend and co-founder, Dustin Moskovitz, has almost 8%, or 133.8 million shares.