Mark Zuckerberg turned 28 last month and has an estimated net worth of $17.5 billion. How does he compare to other young billionaires? Find out in the infographic below.
Earlier this month, Facebookintroduced a new "feature" called Beacon that tracked its users' activity on 44 websites. It took information like purchases at Overstock.com, recipe favorites at Epicurious, and movie ticket choices at Fandango.com and then broadcasted the information...