Top 10 Usability Blunders

Blunders Of The Big Players:

1. No Search Function (Guilty party: NBA)
2. Massive Download Time (Guilty party: ESPN)
3. Non-scannable Text (Guilty party: Boeing)
4. Unclear Link Text (Guilty party: Real Player)
5. Poor 404 Error Page (Guilty party: Monster)
6. Visited Links Not Shown (Guilty party: About)
7. Frames Used (Guilty party: Ocado)
8. Links Point to the Current Page (Guilty party: Ford)
9. Important information contained in images (Guilty party: AOL)
10. Unique Scrolling System (Guilty party: BMW)

Trenton Moss writes for sitepoint.com:
Top 10 Usability Blunders of the Big Players