This internet usage infographic was compiled in March 2012 so – grain of salt. But the numbers, relative to each other, are very illuminating and certainly give you an idea of where your target audience is living on the web. Click here for a nifty infographic showing who’s active, and where, on the web, courtesy of Mashable.com. Breaks data down by platform (Facebook, Twitter, Pinterest etc.) and within each platform by gender, age, income level, and education level. SO useful!