Author Mark Charan Newton cast the first stone with his blog post, What Makes a Good Book Blogger? (From a Writer's Point of View).
Some book bloggers/reviewers responded (reading the comments for these posts expands the discussion significantly):The World in the Satin Bag
The discussion also led to blog posts on the issue of reviewing from 2008:
• Jeff VanderMeer (29 March 2008)
• Hal Duncan (8 June 2008)
Finally, James at Speculative Horizons posted his excellent and helpful tips on blogging and reviewing: Things I've learned about blogging.