I mostly pay attention to fashion blogs so hear are some examples in that genre:
Scott Schuman of The Sartorialist and his book of the same title. He earned little credit until Vogue picked him up, and even more credit when he published his book, which was pretty much his blog printed out on shiny paper.
Ivan Rodic of The Face Hunter and his book of the same title. Same deal as above in terms of acceptance in his field.
Brooke Mahnanti of Belle De Jour: Secret Diary of a London Call Girl. She then went on to publish her adventures in book form and finally as a television show. It was highly speculated that the blog was made up and fictional but once published as a non-fiction book her audience now believed. Goes to show that we dont yet trust blogs but we do trust literature genres.
Any other examples? Any thoughts on why this is? And any predictions to how society and literature will adapt?