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Ads - Sites that host online advertisements, which include advertising graphics, banners, and pop-up content.
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Alcohol - Sites that promote or sell alcohol.
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Anonymizer - Sites with tools that can proxy bypass information or services.
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Art - Sites for Theater, museums, exhibits, photography, and digital graphic resources.
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Autos - Sites about automobiles, including manufacturers, news, reviews and hobbyist information.
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Business - Sites for businesses of all sizes, especially company Web sites.
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Chat - Sites where you can chat in real-time with groups of people.
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Compromised - Valid Web sites that have been hacked and are distributing malware attacks.
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Criminal - Sites that promote software hacking or encourage activities that are illegal, criminal, or harmful to the general public.
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Dating - Sites for meeting other people.
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Download - Sites that offer shareware, freeware, and other legal software downloads.
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Drugs - Sites about illegal or recreational drug use.
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Education - Sites for educational materials and schools, covering all age levels and types.
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Finance - Sites for banks, brokerages, trusts, and other financial organizations.
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Food - Sites about food, dining, catering services, food critics, restaurant reservation, and restaurant review sites.
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Forums - Sites with discussions, bulletin boards, message boards, and forums.
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Gambling - Sites that offer gambling or information about gambling.
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Games - Sites that offer playable games or information about games.
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Government - Sites operated by government agencies, including city, state, regional, county and federal levels.
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Hate - Sites that promote prejudice based on gender, age, race, nationality, religion, sexual orientation, etc.
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Health - Sites that offer information about health care or health services.
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Home - Sites about home improvement, decorating, family, pets, gardening, cooking, event planning (non-wedding) and hobbies.
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Humor - Sites that are intended to be funny or humorous.
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Jobs - Sites that offer job listings, resume services, interview coaching and similar employment-related services.
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Malware - Sites or software that installs on a user's computer with the intent to collect information or make system changes without the user's consent.
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Media - Sites that stream TV shows, videos, or movies.
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Military - Sites sponsored or devoted to the armed forces and government-controlled agencies.
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Miscellaneous - Web sites that do not fall into any of the other categories.
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Music - Sites about Internet radio, streaming media, musicians, bands, and MP3 download sites.
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News - Sites that offer news and information, including newspapers, broadcasters and other publishers.
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Non-profits - Sites for non-profit or charity organizations and services.
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Nudity - Web sites that provide images or descriptions of nudity.
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Personal - Sites about or hosted by personal individuals. Includes personal blogs, guestbook servers, personal hobbies, activities, etc.
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Pharmacy - Sites that provide information about approved drugs and their medical uses.
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Phishing - Sites that pretend to be legitimate business sites while obtaining private information from users.
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Politics - Sites that support politics and provide political party information, including elections or legislation.
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Pornography - Sites that contain any depiction of pornography.
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Portal - Sites that offer an entry to the Internet, including bundled services on their own site.
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Real Estate - Sites that post real estate listings and promote real estate agents/brokers.
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Religion - Sites about religion, religious teachings and groups, and spirituality.
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Search Engines - Sites that display result listings based on keywords.
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Shopping - Sites that sell products and services online.
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Social Network - Sites that promote interaction and networking between people.
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Spam - Web site links found inside spammed e-mails are automatically added to this list.
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Sports - Sites about sports of all kinds, from professional to amateur, from news to league information and schedules.
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Tasteless - Sites that contain offensive and tasteless information on controversial subjects.
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Technology - Sites about computing, hardware and technology, including news, information, code and vendor information.
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Tobacco - Sites that promote or sell all tobacco products.
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Translator - Sites that offer language translations.
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Travel - Sites with travel information and services, including reservations for airlines, cars, hotels, vacations, and trips.
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Violence - Sites that promote violence and sedition.
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Weapons - Sites about weapons, commercial and otherwise.
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Webmail - Sites that offer the ability to send or receive email.