Social media consultant Angela Wilson interviewed me recently on the topic of virtual book tours. The virtual book tour is a relatively new online promotional tool for authors. You can read The Dos and Don'ts of Virtual Book Tours at Angela's Market My Novelblog.
One thing that I didn't address in this article is the advantage of being a tour host. If you are a blogger who would like to draw more traffic to your blog, hosting virtual book tours might be the way to go. You can email me if you're interested in talking about it.