Microsoft and Facebook

Facebook today has about 50 million members... It is the world second largest social network on the internet (behind MySpace). Members give a lot of information about their age, the city they live in, their studies, hobbies... It is therefore a great opportunity for big companies to put adverts on the website and to send them to users according to their profiles and actions. I think this is the main reason why a firm like Microsft bought such an amount of money.