6. No name of author in tag line or on side bar.
7. No author photo.
8. No signature or name in the footer; no way to tell who wrote post on a multi-author site.
9. No subscription form; no way to get blog updates through RSS or email.
10. No way for readers to leave comments and use trackbacks.
11. Too many categories or none at all.
12. No information about their business services and products.
13. Calendars for no reason at all (what is the point of those calendars anyway?).
Tomorrow: Mistakes 14 to 17: Marketing