Honestly, I'm not sure how one makes a living blog writing. I suppose you could use ads, but you would need a massive readership to make that pay. After about a year, I've got 374 strangers that follow my blog, which I think is fantastic. That's a lot of strangers to want to read what I write, but it's nowhere near the thousands it would take to make adds on a blog pay.
Am I missing something here? Other than ads or a donate button, I don't know any way to make a blog pay. I never really considered my blog as a potential source of income, I just like writing it. I feel lucky that people take the time to read it, I can't imagine anyone paying for that privilege. Not my blog, anyway.