Men are from Facebook, Women are from Twitter?

"In fact gender, more so than race, ethnicity or economic status, determines how and what we peruse online. According to a recent study by eMarketer, slightly more women say they use the Internet than men. However once logged on, male Internet users tend to spend more time surfing the Web than females. Meanwhile, in a separate report, eMarketer estimates that U.S. marketers will spend 37.2 billion dollars on online advertising by the year 2013. Clearly understanding what gets the genders ticking makes economic sense for any business buying ad space on the Web."