1. Apologising for not posting for such a long time.
2. Mentioning that you can't think of anything to write about.
3. Bitching about another blogger.
4. Writing about how lonely/alone/miserable you are/feel.
5. Bitching about how badly your ex treated you and didn't understand you.
6. Bitching about how your current bf/gf treats you and doesn't understand you.
7. Mentioning the words "blog", "blogging", "blogosphere" etc. in your post.
8. Mentioning how amazing the bf/gf is.
9. Plugging other bloggers repeatedly.
10.Posting pictures of cute bloggers.
Disclaimer: Not directed to anyone in particular. Hell I been guilty of some of them as well.