What’s that got to do with blogging a book? If you don’t get noticed by a publisher while blogging your book but you do gain readers, this proves you have a market. Thus, you should find you have readers in the e-book market as well.
I suggest you take your blogged book over to Smashwords.com and produce an e-book that can be distributed in a variety of e-book formats. Take it over to CreateSpace.com and produce a POD book and a Kindle book, too. (In the near future, Smashwords will allow you to produce a Kindle book there as well.)
Then keep posting to your blog to keep readers interested–and buying the e-book or POD book.
Rinse and repeat. In other words, start a new blogged book.