ITS GLOBAL user base is climbing inexorably towards 1 billion and next week, when it floats as a public company, Facebook is expected to be valued at a staggering $US95 billion. But to the company you are worth as little as $4.54 a year.

That's the amount of money Facebook is likely to earn in advertising revenue this year from each of its 11 million Australian users, despite the fact that Australians spend more time on the social networking site than anywhere else.

Facebook financial info

It is marginally more than the global average but less than half the amount of dollars that each American and Canadian generates for the company.

Yet analysts expect an increase in advertising after Facebook goes public next week, as the pressure mounts from shareholders to lift the average revenue per user to higher levels.