W2I 50 - Search Engine Optimizing (SEO) / Mengoptimalkan website melalui search engine.

1. Yahoo! Search
2. Google
3. MSN
4. Open Directory
5. ExactSeek
6. ScrubTheWeb
7. SearchSight
8. EntireWeb
9. GigaBlast
10. Link Centre
11. Exalead
12. MavicaNet
13. World Site Index
14. Info Listings
15. What U Seek
16. Accoona
17. BusinessSeek
18. FWD
19. IllumiRate
20. AMRAY
21. 01WebDirectory
22. Amfibi
23. Zeezo
24. Wikidweb
25. Pedsters Planet
26. Submission4U
27. AnooX
28. Arakne Links
29. Info Tiger
30. WebbieWorld
31. TowerSearch
32. TopSites
33. Cipinet
34. ABD
35. NetInsert
36. Web Directory
37. Klottra
38. DareDirectory
39. IRKA
40. AnyApex
41. SplatSearch
42. Purple Directory
43. Cache Directory
44. Burf
45. Dramba
46. Clickey
47. CherryDir
48. CyberWebSearch
49. NewWebDirectory
50. JDGO