Ann Handley has a nice post here: What's the Biggest Lie About Blogging? | Marketing Profs Daily Fix Blog.

Jeremy Wright had the best answer:

1. Blogging's just a fad.

2. Always maintain a hostile relationship with your audience.

3. Don't ever admit you did something wrong.

4. It's just a PR channel.

5. Don't have a personality if you're blogging for business.

6. I can't blog because I can't write.

7. Bloggers should let it all hang out.

8. Facts just get in the way of blogging.

9. Without open comments, it's not a blog anyway.

10. There are 10,000 new blogs launched every day.

11. I don't have time to blog.

12. Fast is better than right.

13. It's impossible to make money blogging.

Find the rest on Ann's post...

(Author: Seth Godin)