You've got a great idea for a book. Before you spend the next six to 12 months writing a book proposal and sending the proposal to editors and agents, you can short-cut the process: create a blog and write your book on your blog.
Dozens of bloggers have been seduced into traditional book projects. My favorite is Julie & Julia, it's a wonderful book by any standards.
Unfortunately I'm snowed under with other projects, but I'd love to test out a blog-to-book project.
If you decide to blog your book, remember:
Paul Jones, another judge and director of iBiblio, a digital library, said: "A great blook is not a blog shovelled on to paper. Julie and Julia successfully makes the transition and grows as it goes, having learnt from the blog readers."
Enable Comments on your blog, and your blog's readers will help you to write your book.