By the end of 2011, NM Incite, a Nielsen/McKinsey company, tracked over 181 million blogs around the world, up from 36 million in 2006

According to blog.nielsen.com  6.7 million people publish blogs on blogging websites, and another 12 million write blogs using their social networks.

• Women make up the majority of bloggers, and half of bloggers are aged 18-34
• Bloggers are well-educated: 7 out of 10 bloggers have gone to college, a majority of whom are graduates
• About 1 in 3 bloggers are Moms, and 52 percent of bloggers are parents with kids under 18 years-old in their household
• Bloggers are active across social media: they’re twice as likely to post/comment on consumer-generated video sites like YouTube, and nearly three times more likely to post in Message Boards/Forums within the last month