Manolo at the shoe blog says he earns 6 figures in US $. I make a useful addition to my income by blogging but certainly couldn't live off it directly. However, it does serve as a great advertisement for my writing, which has lead to a number of other freelance writing jobs which do indeed pay my living (couple of book contracts, national newspapers etc). I think there's a lot more earning that way than there are directly from blogs.
That would be me . I do make a high percentage of my income from blogs but I wouldn't class myself as a pro blogger but saying that blogging is I suppose my primary business at the moment.