Bloggers are not a homogenous group, but they are an educated and affluent one: three out of four U.S. bloggers are college graduates, and 42% have attended graduate school. They skew male, and more than half have a household income over $75,000. They are experienced: although it has only recently exploded into the mainstream, blogging is not a new phenomenon. Half of bloggers are on their second blog, and 59% have been blogging for more than two years... - socialmediaBiz