It's time for another Good Idea/Bad Idea
Good Idea:
Promoting your work.
Bad Idea:
Promoting your work by pretending that you are a reader who is commenting like any other person on a blog, pimping your book, and having your fake reader name link to your author website.
There are plenty of stupid people on the internet. But people who spend a lot of time on book blogs — and reading — are generally a lot less stupid than in other internet locales.
God.