"Mommy Blog" Dooce.com generates an estimated $30,000 - $50,000 per month in revenue

"She [Heather Armstrong] is one of the few bloggers who wield that kind of clout. Typically, there are 100,000 visitors daily to her site, Dooce.com, where she writes about her kids, her husband, her pets, her treatment for depression and her life as a liberal ex-Mormon living in Utah. As she points out, a sizable number also follow her on Twitter (in the year and a half since she threatened Maytag, she has added a half-million more). She is the only blogger on the latest Forbes list of the Most Influential Women in Media, coming in at No. 26, which is 25 slots behind Oprah, but just one slot behind Tina Brown. Her site brings in an estimated $30,000 to $50,000 a month or more — and that’s not even counting the revenue from her two books, healthy speaking fees and the contracts she signed to promote Verizon and appear on HGTV. She won’t confirm her income (“We’re a privately held company and don’t reveal our financials”). But the sales rep for Federated Media, the agency that sells ads for Dooce, calls Armstrong “one of our most successful bloggers,” then notes a few beats later in our conversation that “our most successful bloggers can gross $1 million.”"
Source:  New York Times, 23rd February 2011