Found this across the street, some of you may have gone to all 100, and some may have more to add.
Feel free to critique or add some...
1. Adult Friend Finder (http://adultfriendfinder.com)
2. youporn.com/ (http://youporn.com)
3. redtube.com/ (http://redtube.com)
4. MediaFire (http://mediafire.com)
5. LiveJasmin.com (http://livejasmin.com)
6. Home - Torrentz.com (http://torrentz.com)
7. Megaupload (http://megarotic.com)
8. Net Play Media Inc (http://xvideos.com)
9. Registerfly.com (http://brazzers.com)
10. MyFreePaysite.com (http://myfreepaysite.com)
11. UserCash.com (http://usercash.com)
12. Noble Developments Inc. (http://realitykings.com)
13. anonym.to/ (http://anonym.to)
14. XTube.com (http://xtube.com)
15. Bangbros Inc (http://bangbros1.com)
16. XNXX Galleries (http://xnxx.com)
17. Idnm Co. (http://dtiblog.com)
18. xhamster.com/ (http://xhamster.com)
19. Freeones (http://freeones.com)
20. Payserve (http://payserve.com)
21. AEBN (http://aebn.net)
22. Aebn (http://pornotube.com)
23. porndirt.com/ (http://porndirt.com)
24. tu.tv/ (http://tu.tv)
25. SEN Media Group inc. (http://debonairblog.com)
26. Fling (http://fling.com)
27. Hokuto Company (http://dmm.co.jp)
28. ImageFap (http://imagefap.com)
29. Digi-group BVBA (http://hornymatches.com)
30. Bayshore Solutions Ltd (http://videosz.com)
31. brazzersnetwork.com/ (http://brazzersnetwork.com)
32. Sexy o No? (http://sexyono.com)
33. Petardas.com (http://petardas.com)
34. Bangbros (http://bangbros.com)
35. spankwire.com/ (http://spankwire.com)
36. 6park.com (http://6park.com)
37. Pornorama (http://pornorama.com)
38. Adult-Empire (http://adult-empire.com)
39. Pornaccess (http://pornaccess.com)
40. Sexgo (http://89.com)
41. Cams.com (http://cams.com)
42. uploaded.to (http://uploaded.to)
43. mforos.com/ (http://mforos.com)
44. MET ART Fine Photography (http://met-art.com)
45. Pic Hunter (http://pichunter.com)
46. Literotica.Com (http://literotica.com)
47. Torrentz.ws (http://torrentz.ws)
48. Stream Sex - Streamsex - Streamsex.com (http://streamsex.com)
49. Mansef Productions (http://juggcrew.com)
50. BangBros.com, Inc. (http://bangbrosnetwork.com)
51. La brosse de chalas (http://gonzo-movies.com)
52. Kinghost (http://kinghost.com)
53. pornhost.com (http://pornhost.com)
54. Unlisted (http://oooo.org)
55. Wannawatch (http://wannawatch.com)
56. yuvutu.com/ (http://yuvutu.com)
57. ?????.NET (http://fishki.net)
58. Nastydollars (http://nastydollars.com)
59. pokeherstars.com/ (http://pokeherstars.com)
60. CollegeHumor (http://collegehumor.com)
61. eskimotube.com/ (http://eskimotube.com)
62. Thumblogger, your own free adult blog (http://thumblogger.com)
63. Blue Ace Inc. (http://rude.com)
64. Franz Hauer (http://trafficmasterz.net)
65. eFukt (http://efukt.com)
66. Naughty America (http://naughtyamerica.com)
67. sumotorrent.com/ (http://sumotorrent.com)
68. La Brosse de Chalas (http://dreammovies.com)
69. ime.nu/ (http://ime.nu)
70. picscrazy.com/ (http://picscrazy.com)
71. Untitled Document (http://freepornofreeporn.com)
72. www.im.tv (http://im.tv)
73. YOBT (http://yobt.com)
74. Untitled Document (http://nsgalleries.com)
75. thebrazzers.com/ (http://thebrazzers.com)
76. flashvideotheater.com/ (http://flashvideotheater.com)
77. Burwebs S.L. (http://muyzorras.com)
78. La Brosse de Chalas (http://magicmovies.com)
79. Boys food (http://boysfood.com)
80. Flirtfever.de (http://flirt-fever.de)
81. myhotcomments.com/ (http://myhotcomments.com)
82. linkbucks.com/ (http://linkbucks.com)
83. Ojuegos (http://juegos.com)
84. nonk.info/ (http://nonk.info)
85. Pimproll Webmaster Revenue Program (http://pimproll.com)
86. xvn.jp/ (http://xvn.jp)
87. fantasti.cc (http://fantasti.cc)
88. pornbb.org/ (http://pornbb.org)
89. badjojo.com/ (http://badjojo.com)
90. realgf.com/ (http://realgf.com)
91. Uchida Masahiro (http://jp-sex.com)
92. humoron.com/ (http://humoron.com)
93. Diary.ru Inc. (http://diary.ru)
94. The Voyeurweb (http://voyeurweb.com)
95. Smashing Thumbs (http://funny-games.biz)
96. FriendFinder Inc. (http://passion.com)
97. Clearcash (http://freestreamtv.com)
98. ??????.?? (http://zvezdi.ru)
99. cam4.com/ (http://cam4.com)
100. rutube.ru/ (http://rutube.ru)
Feel free to critique or add some...
1. Adult Friend Finder (http://adultfriendfinder.com)
2. youporn.com/ (http://youporn.com)
3. redtube.com/ (http://redtube.com)
4. MediaFire (http://mediafire.com)
5. LiveJasmin.com (http://livejasmin.com)
6. Home - Torrentz.com (http://torrentz.com)
7. Megaupload (http://megarotic.com)
8. Net Play Media Inc (http://xvideos.com)
9. Registerfly.com (http://brazzers.com)
10. MyFreePaysite.com (http://myfreepaysite.com)
11. UserCash.com (http://usercash.com)
12. Noble Developments Inc. (http://realitykings.com)
13. anonym.to/ (http://anonym.to)
14. XTube.com (http://xtube.com)
15. Bangbros Inc (http://bangbros1.com)
16. XNXX Galleries (http://xnxx.com)
17. Idnm Co. (http://dtiblog.com)
18. xhamster.com/ (http://xhamster.com)
19. Freeones (http://freeones.com)
20. Payserve (http://payserve.com)
21. AEBN (http://aebn.net)
22. Aebn (http://pornotube.com)
23. porndirt.com/ (http://porndirt.com)
24. tu.tv/ (http://tu.tv)
25. SEN Media Group inc. (http://debonairblog.com)
26. Fling (http://fling.com)
27. Hokuto Company (http://dmm.co.jp)
28. ImageFap (http://imagefap.com)
29. Digi-group BVBA (http://hornymatches.com)
30. Bayshore Solutions Ltd (http://videosz.com)
31. brazzersnetwork.com/ (http://brazzersnetwork.com)
32. Sexy o No? (http://sexyono.com)
33. Petardas.com (http://petardas.com)
34. Bangbros (http://bangbros.com)
35. spankwire.com/ (http://spankwire.com)
36. 6park.com (http://6park.com)
37. Pornorama (http://pornorama.com)
38. Adult-Empire (http://adult-empire.com)
39. Pornaccess (http://pornaccess.com)
40. Sexgo (http://89.com)
41. Cams.com (http://cams.com)
42. uploaded.to (http://uploaded.to)
43. mforos.com/ (http://mforos.com)
44. MET ART Fine Photography (http://met-art.com)
45. Pic Hunter (http://pichunter.com)
46. Literotica.Com (http://literotica.com)
47. Torrentz.ws (http://torrentz.ws)
48. Stream Sex - Streamsex - Streamsex.com (http://streamsex.com)
49. Mansef Productions (http://juggcrew.com)
50. BangBros.com, Inc. (http://bangbrosnetwork.com)
51. La brosse de chalas (http://gonzo-movies.com)
52. Kinghost (http://kinghost.com)
53. pornhost.com (http://pornhost.com)
54. Unlisted (http://oooo.org)
55. Wannawatch (http://wannawatch.com)
56. yuvutu.com/ (http://yuvutu.com)
57. ?????.NET (http://fishki.net)
58. Nastydollars (http://nastydollars.com)
59. pokeherstars.com/ (http://pokeherstars.com)
60. CollegeHumor (http://collegehumor.com)
61. eskimotube.com/ (http://eskimotube.com)
62. Thumblogger, your own free adult blog (http://thumblogger.com)
63. Blue Ace Inc. (http://rude.com)
64. Franz Hauer (http://trafficmasterz.net)
65. eFukt (http://efukt.com)
66. Naughty America (http://naughtyamerica.com)
67. sumotorrent.com/ (http://sumotorrent.com)
68. La Brosse de Chalas (http://dreammovies.com)
69. ime.nu/ (http://ime.nu)
70. picscrazy.com/ (http://picscrazy.com)
71. Untitled Document (http://freepornofreeporn.com)
72. www.im.tv (http://im.tv)
73. YOBT (http://yobt.com)
74. Untitled Document (http://nsgalleries.com)
75. thebrazzers.com/ (http://thebrazzers.com)
76. flashvideotheater.com/ (http://flashvideotheater.com)
77. Burwebs S.L. (http://muyzorras.com)
78. La Brosse de Chalas (http://magicmovies.com)
79. Boys food (http://boysfood.com)
80. Flirtfever.de (http://flirt-fever.de)
81. myhotcomments.com/ (http://myhotcomments.com)
82. linkbucks.com/ (http://linkbucks.com)
83. Ojuegos (http://juegos.com)
84. nonk.info/ (http://nonk.info)
85. Pimproll Webmaster Revenue Program (http://pimproll.com)
86. xvn.jp/ (http://xvn.jp)
87. fantasti.cc (http://fantasti.cc)
88. pornbb.org/ (http://pornbb.org)
89. badjojo.com/ (http://badjojo.com)
90. realgf.com/ (http://realgf.com)
91. Uchida Masahiro (http://jp-sex.com)
92. humoron.com/ (http://humoron.com)
93. Diary.ru Inc. (http://diary.ru)
94. The Voyeurweb (http://voyeurweb.com)
95. Smashing Thumbs (http://funny-games.biz)
96. FriendFinder Inc. (http://passion.com)
97. Clearcash (http://freestreamtv.com)
98. ??????.?? (http://zvezdi.ru)
99. cam4.com/ (http://cam4.com)
100. rutube.ru/ (http://rutube.ru)