Arts
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Business
Accounting (2439), Aerospace and Defense (1470), Agriculture and Forestry (10147), Arts and Entertainment (18568), Associations (75), Automotive (1929), Biotechnology and Pharmaceuticals (1685), Business and Society (38), Business Law (51), Business Services (22382), Business Travel (192), Chemicals (4487), Classifieds (488), Construction and Maintenance (20974), Consumer Goods and Services (13462), Cooperatives (83), Customer Service (276), Directories (108), E-Commerce (1761), Education and Training (652), Electronics and Electrical (10204), Employment (1957), Energy and Environment (5424), Financial Services (19950), Food and Related Products (6589), Healthcare (6650), History (93), Hospitality (2177), Human Resources (1045), Industrial Goods and Services (27093), Information Technology (1563), International Business and Trade (1683), Investing (5277), Labor (908), Major Companies (5451), Management (4435), Marketing and Advertising (9285), Mining and Drilling (888), Opportunities (1738), Publishing and Printing (7161), Real Estate (2179), Regional (9), Resources (936), Retail Trade (1394), Small Business (881), Software (1592), Telecommunications (6068), Textiles and Nonwovens (7476), Transportation and Logistics (11172), Wholesale Trade (707)

Computers
Algorithms (398), Artificial Intelligence (1983), Artificial Life (401), Bulletin Board Systems (182), CAD and CAM (1090), Companies (816), Computer Science (2325), Consultants (2370), Data Communications (1422), Data Formats (2387), Desktop Publishing (103), Directories (17), E-Books (255), Education (1523), Employment (764), Emulators (541), Ethics (68), Fonts (551), Games (57230), Graphics (2656), Hacking (437), Hardware (8455), History (405), Home Automation (110), Human-Computer Interaction (451), Internet (44764), Intranet (101), Mailing Lists (36), MIS (643), Mobile Computing (484), Multimedia (3750), Newsgroups (308), Open Source (680), Operating Systems (10615), Organizations (391), Parallel Computing (572), Performance and Capacity (85), Product Support (249), Programming (20920), Publications (249), Robotics (1004), Security (3150), Shopping (32), Software (47192), Speech Technology (448), Supercomputing (59), Systems (5738), Usenet (308), Virtual Reality (325)

Games
Board Games (4210), Card Games (1485), CCGs (740), Coin-Op (736), Collecting (57), Computer Games (1580), Console Games (3703), Consumer Information (106), Conventions (147), Developers and Publishers (113), Dice (104), Fantasy Sports (973), Gambling (3206), Game Studies (95), Hand-Eye Coordination (75), Hand Games (31), Miniatures (1041), MUDs (1597), Online (4437), Paper and Pencil (29), Party Games (160), Play-By-Mail (124), Play Groups (84), Puzzles (661), Resources (69), Roleplaying (5241), Shopping (1307), Tile Games (95), Trading Card Games (740), Video Games (57230), Web Hosting (4), Women in Gaming (43), Yard, Deck, and Table Games (165)

Health
Addictions (5573), Aging (136), Alternative (6806), Animal (2954), Beauty (678), Child Health (1071), Conditions and Diseases (17234), Dentistry (556), Disabilities (1389), Education (205), Employment (545), Environmental Health (412), Fitness (1870), Healthcare Industry (6650), History (7), Home Health (427), Insurance (63), Medicine (13390), Men's Health (433), Mental Health (6978), Nursing (1803), Nutrition (677), Occupational Health and Safety (848), Organizations (184), Pharmacy (6370), Products and Shopping (61), Professions (1413), Public Health and Safety (4047), Publications (162), Regional (11), Reproductive Health (2687), Resources (276), Search Engines (7), Senior Health (1201), Senses (501), Services (102), Support Groups (536), Teen Health (94), Weight Loss (436), Women's Health (923), Apartment Living (45), Consumer Information (4824), Cooking (19721), Do-It-Yourself (32), Domestic Services (71), Emergency Preparation (107), Entertaining (196), Family (9086), Gardens (3673), Home Automation (110), Home Business (93), Home Improvement (698), Homemaking (364), Homeowners (200), Moving and Relocating (91), News and Media (55), Personal Finance (1134), Personal Organization (136), Pets (33644), Rural Living (168), Seniors (1550), Shopping (12876), Software (9), Urban Living (17)

Kids and Teens
Arts (957), Computers (311), Directories (96), Entertainment (955), Games (894), Health (568), International (5534), News (73), People and Society (6375), Pre-School (234), School Time (7513), Sports and Hobbies (2312), Teen Life (1036), Your Family (151)

News
Alternative (128), Analysis and Opinion (532), Breaking News (75), By Subject (272), Chats and Forums (40), Colleges and Universities (797), Current Events (402), Directories (159), Extended Coverage (35), Internet Broadcasts (55), Journals (52), Magazines and E-zines (502), Media (1951), Newspapers (3687), Online Archives (40532), Personalized News (27), Politics (326), Radio (160), Regional (10), Satire (115), Services (235), Television (109), Weather (258)

Recreation
Antiques (1114), Audio (242), Autos (11468), Aviation (6060), Birding (2168), Boating (4370), Bowling (812), Camps (1141), Climbing (2012), Collecting (7195), Crafts (7049), Directories (14), Drugs (325), Fireworks (120), Food (7273), Games (80311), Gardens (3673), Genealogy (6683), Guns (1873), Horoscopes (154), Humor (6765), Kites (752), Knives (84), Living History (2270), Martial Arts (7696), Models (1958), Motorcycles (4573), Nudism (207), Outdoors (18583), Parties (79), Pets (33644), Picture Ratings (233), Radio (3601), Roads and Highways (1567), Scouting (8172), Sports (136683), Theme Parks (806), Tobacco (292), Trains and Railroads (1080), Travel (8232), Whips (23)

Reference
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Regional
Africa (17353), Asia (71247), Caribbean (9946), Central America (3869), Countries (233), Europe (299128), Middle East (14376), North America (1016800), Oceania (99594), Polar Regions (433), South America (6087)

Science
Agriculture (2723), Anomalies and Alternative Science (652), Astronomy (3955), Biology (25085), Chemistry (4533), Conferences (42), Directories (51), Earth Sciences (7360), Educational Resources (383), Employment (199), Environment (7762), History of Science (675), Institutions (1083), Instruments and Supplies (2436), Math (11387), Methods and Techniques (203), News (100), Philosophy of Science (322), Physics (4948), Publications (272), Reference (710), Science in Society (758), Search Engines (10), Social Sciences (27850), Software (249), Technology (14184), Women (232)

Shopping
Antiques and Collectibles (6411), Auctions (469), Autos (576), Beauty Products (2531), Books (6280), By Region (9), Children (2003), Classifieds (488), Clothing (8079), Computers (32), Consumer Electronics (1756), Crafts (9505), Death Care (184), Directories (61), Education (1793), Entertainment (5563), Ethnic and Regional (2317), Flowers (2174), Food (6568), Furniture (1798), General Merchandise (1536), Gifts (3082), Health (10135), Holidays (648), Home and Garden (12876), Jewelry (4524), Music (3194), Niche (1187), Office Products (663), Pets (3274), Photography (1137), Publications (7078), Recreation (7057), Religious (31), Sports (10018), Tobacco (649), Tools (817), Toys and Games (3428), Travel (183), Vehicles (6697), Visual Arts (6423), Weddings (552), Wholesale (707)

Society
Activism (1345), Advice (131), Crime (2102), Death (2515), Disabled (1389), Economics (3044), Education (59314), Ethnicity (8423), Folklore (1441), Future (403), Gay, Lesbian, and Bisexual (6253), Genealogy (6683), Government (3048), History (15098), Holidays (2751), Issues (26197), Language and Linguistics (6161), Law (24203), Lifestyle Choices (837), Men (653), Military (3900), Organizations (19644), Paranormal (2703), People (23752), Philanthropy (2497), Philosophy (9327), Politics (5030), Relationships (5900), Religion and Spirituality (121477), Sexuality (805), Social Sciences (27850), Sociology (1177), Subcultures (2010), Support Groups (407), Transgendered (1455), Urban Legends (75), Women (3837), Work (908)

Sports
Adventure Racing (215), Airsoft (80), Animal Fighting (20), Archery (167), Badminton (286), Baseball (6891), Basketball (11369), Billiards (304), Bocce (30), Boomerang (64), Bowling (812), Boxing (339), Cheerleading (517), College and University (3603), Cricket (1399), Croquet (177), Cycling (5434), Darts (347), Disabled (359), Equestrian (12436), Events (642), Extreme Sports (244), Fantasy (973), Fencing (909), Fishing (3626), Flying Discs (1165), Football (10067), Gaelic (471), Gay, Lesbian, and Bisexual (290), Goalball (14), Golf (5154), Greyhound Racing (171), Gymnastics (1364), Handball (21), Hockey (7567), Horse Racing (955), Hunting (3296), Informal Sports (31), Jai Alai (16), Kabbadi (9), Korfball (43), Lacrosse (1026), Laser Games (111), Lumberjack (18), Martial Arts (7696), Motorsports (7817), Multi-Sports (581), Netball (105), Officiating (39), Organizations (82), Orienteering (90), Paddleball (26), Paintball (1418), People (314), Petanque (44), Racquetball (80), Resources (572), Rodeo (384), Rope Skipping (27), Rounders (9), Running (3251), Sepak Takraw (12), Shooting (98), Shopping (10018), Skateboarding (719), Skating (1407), Soccer (15340), Softball (1984), Software (65), Squash (174), Strength Sports (1008), Table Tennis (196), Tchoukball (9), Team Handball (85), Team Spirit (51), Tennis (2337), Track and Field (2258), Travel (47), Volleyball (1793), Walking (138), Water Sports (5293), Winter Sports (3577), Women (50), Wrestling (2229), Youth and High School (69)

 

These links have not all been checked out so please use at your discretion.