When you're about to launch a new product or service, you need some buzz. Sure, you can use your blog to mention your plans a few times leading up to the launch. You'll probably ask some fellow bloggers to write reviews. You'll use your best copywriting techniques to craft pitches for your blog and email list, and send as many people as you can to the sales page on the day of the launch. That's all good. But there's also a more subtle route.