According to GalleyCat, a Technorati survey has found that 2% of blog writers regard their blog as their primary source of income. Is that good or bad? Well, look at the other numbers. Out of 133 million blogs, only 7.4 million have been updated in the past 120 days. And yet in the survey 15% of bloggers claim that their blog is a supplemental source of income. Yeah, right. Sorry, Technorati, I suspect that your respondents were mainly self-selecting. The true percentage of people who make a living from their blogs is probably much smaller.