Americans spend more time on Facebook than any other US website. And cumulatively, it's not a small amount of time, it's a lot of time. Nielsen estimates that Americans spent 53 billion minutes on Facebook during the month of May.
These 53 billion minutes are equal to 100,000 years or 36.8 million days. Before your mind blows up, this number represents the usage of 150 million Facebook users. Breaking it down, each user is spending about 350 minutes per month on the social network or about 10 minutes per day. Looking at it that way, 53 billion doesn't look so bad, does it? [Nielsen via SF Gate]