The document discusses Web 2.0 features such as social bookmarking, user-generated content, and microformats. It also highlights the roles of AJAX and progressive enhancement in web development, focusing on search engine optimization, usability, and accessibility. The content emphasizes the importance of quality in user-generated content and the technical aspects that enhance user experience.

1. Web 2.0 vs Search

2. Social Bookmarking

3. Social Bookmarking

4. Social Bookmarking

5. Social Bookmarking

6. Blogs - quality

7. User Generated Content - content

8. User Generated Content - tags

9. User Generated Content - tags

10. User Generated Content - tags

11. User Generated Content - tags <a href=“index.html” rel=“tag” /> text </a>

12. Microformats

13. Microformats

14. Microformats <div class=“hreview” > The movie rocked, I couldn’t even leave the theatre at the end because I just didn’t want it to be over. </div>

15. Microformats

16. AJAX

17. AJAX

18. AJAX progressive enhancement

19. DOM Scripting SEO Accessibility Basic page, works without javascript

20. DOM Scripting SEO Accessibility javascript supported, add the features.

21. AJAX Basic website, normal page refreshes.

22. HIJAX partial page refresh, uses AJAX if supported

23. HIJAX 1 map query = 1 new html page refresh

24. HIJAX partial page refresh, ajax maps update

25. Foundations Search Engine Optimisation Usability Accessibility