but the mayor pat burke says facebook has informed the city the campus is too small for future plans. >> they're huge. facebook is going through the roof. they will need hundreds of thousands, and if in upcoming years, over a million square feet of additional space. and there aren't that many places in this local area that can accommodate that. >> reporter: analysts say one reason facebook is looking to expand into the old sun micro system's campus in men although park is the possibility of the company going public, according to published reports, goldman sachs will invest about $450 million into facebook, which will help push facebook's value to $50 billion. interestingly, many analysts say facebook is not necessarily a good financial investment on paper. because it generates very little money for its perceived value. but -- >> facebook has so much following, that i think people are going to be more emotionally tied into it, other than just trying to get the fast return on it. >> reporter: tech analysts agree. rob enderly says a facebook initial public offering would boost silicone v