- SPAM!
- Web pages that reprogram my browser's "Back" button to take me back to their home page.
- Web pages that color my browser's scroll bars.
- Websites that put messages in my browser's status bar. That's what the dang web page is for!
- PEOPLE THAT TYPE ALL IN CAPS!!!
- People who never learned that email is a text medium.
- Large graphics that take way too long to load.
- Large graphics that make me scroll right to see the whole thing.
- Broken links.
- Inane lists of ten things.