8 Critical Usability Tips

Here they are in summary:
1. Navigation – KISS – Keep it simple
2. Navigation – Less is more (restricting navigation in the right circumstance improves the user experience)
3. Content – Provide visual clues that direct the eyes to the right content.
4. Content – Create Scanable content
5. Interaction – Make the next step “duh” obvious
6. Interaction – use Search + Refine
7. Persuasion – Invoke reciprocity, social validation, and similarity
8. Persuasion – Find the right social networks and provide thought leadership