Today, I wanna talk about the most popular directories and search engines. So Every one can ask me: How do you know that SE or Directory are popular or now, and how to make difference?
The answer is so easy. First, you have to know that the big strong tool to differentiate is Google PageRank and Alexa.

Page Rank Checker is a free tool to check Google™ page ranking of any web site pages easily and to display your site's PageRank™ value on your web pages

http://www.prchecker.info

Also, I find Alexa is helpful in orde to check classfield directories.

http://www.Alexa.com

This a list of Search Engine/ Director from www.sitesubmiturl.com
Search Engine/
Directory 1. Google
2. Yahoo! Search
3. Open Directory
4. Bing
5. SearchMe
6. ScrubTheWeb
7. Cuil
8. ExactSeek
9. SearchSight
10. EntireWeb
11. LII
12. Web World
13. A1 Web Directory
14. MavicaNet
15. Dramba
16. Link Centre
17. What U Seek
18. Wikidweb
19. IllumiRate
20. Arakne Links
21. Domaining
22. BusinessSeek
23. Directory Storm
24. Info Listings
25. Pedsters Planet 1
2
855
1,547
3,934
11,637
13,620
15,134
15,195
16,515
21,635
25,413
26,014
26,345
27,086
28,222
28,349
28,409
28,660
28,907
28,999
29,841
30,361
30,461
30,520 10
9
8
2
7
6
7
3
5
6
8
3
4
4
3
3
6
4
5
4
3
3
4
4
4 Search Engine/
Directory 26. My Directory Live
27. Info Tiger
28. Ablaze Directory
29. SurfSafely
30. Search Web World
31. World Site Index
32. Exalead
33. 01WebDirectory
34. IS
35. AMRAY
36. Finest 4
37. CyberWebSearch
38. The Living Link
39. SonicRun
40. TowerSearch
41. IWD
42. Web Linker
43. Web Directory
44. Wondex
45. OneMillionDirectory
46. NetInsert
47. Clock Tower Studio
48. Cipinet
49. Amidalla
50. Amfibi 30,614
30,756
31,256
31,708
32,677
33,725
36,380
36,475
38,583
38,814
40,296
40,992
41,887
42,190
42,855
44,162
44,722
46,523
47,052
47,696
49,095
52,629
54,620
56,658
56,740 4
5
4
5
4
4
7
0
4
3
2
4
3
4
4
5
0
0
2
2
5
3
4
4
4
4
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