Ask HN: What is the fair valuation (now and 5 years later) of Facebook?
Of course, in your opinion. would be tough to estimate without knowing their product (and income) pipeline for the future. I am sure they have got more features planned up but not known outside. It would also depend on how well they implement them in face of competition for those features. The 5 year one, it would be a joke to even try to estimate it, its too unpredictable in the web business. One misstep, and you can be gone! In my opinion it is worth what people will pay for it when more then 5% is floated on the open market.