For me it was one blog (my first) and the sale was Met Art after slapping up one image linked to a gallery - the blog was not a babe blog more of a everything and nothing blog - this was a few years ago now...
I was inspired by Coolios Babes - I've been posting over at
http://coolios.net for many many years
The great man (and friend) gave me a lot of hints and tips back then - as for updating I did it daily then...
I do that still with a new blog and drop to 2 or 3 per week with some and longer with others if they are making good sales