AbortionAbortion topic and positions for or against
Ads/AnalyticsAd networks and analytics services
Adult/MatureAdult themes not in another more specific category.  Not kid-friendly.
Related categories: Sex Education, Pornography, Nudity
AlcoholPromotes alcoholic consumptions
Alternative IdeologyBelief systems and practices not included in "Religion" category, including occult, paranormal, folklore, etc.
AnonymizersProvides ability to bypass web filtering controls by loading sites via intermediate service.
Arts/CultureFine arts and museums
Auctions/ClassifiedsProduct or service listings from individuals
AudioLive streams or downloaded audio clips
Brokerage/TradingStock trading and information
Business/EconomyGeneral business, for businesses that don't fit into a more specific category
Chat/IM/SMSShort message clients and services
Child Pornography/AbuseSexual exploitation/abuse of a minor
Content ServersHosting of files for accelerating web sites and services
Dating/PersonalsDating, romance, matchmaking
Digital PostcardsGreeting cards
Drugs/Controlled SubstancesInformation or promotion of illegal drugs
EducationEducational instututions, training courses and tools, and learning topics
EmailEmail services
EntertainmentAll forms of entertainment not included in a more specific category.
Related: Arts/Culture, Sports, Games, Humor/Comics
Extreme/GruesomeGory, perverse, gross or horrific content
File Sharing/StorageStorage and sharing of files and other data
FinanceFinancial institutions (banking, insurance) or related financial topics
For KidsFamily-safe sites designed for kids (only used as a secondary category)
ForumsNewsgroups, forums or bulletin boards that have many topics and not a specific topic that would fit another specific category.
GamblingServices or information related to gambling
GamesGame playing, downloading or discussion.
Government/LegalGovernment agencies and information.  Also, businesses that deal with law (lawyers).
HackingInformation or tools for unauthorized access to computer systems.
Hate/DiscriminationPromotes or supports hostility toward a grouping of individuals
HealthHealth and wellness, including medical personnel, facilities and medicines, and fitness-related.
Hobbies/RecreationHobbies and recreational activities, including collecting, gardening, hunting/fishing, etc.
HostingHosting of web sites for organizations and individuals
Humor/ComicsComedy, jokes, fun
Information TechnologyComputing, electronics and general technology that doesn't fit into a more specific category.
Information/Computer SecurityInformation or tools for computer security
Infrastructure/IOTInternet infrastructure and devices
Job SearchJob search
Lingerie/SwimsuitIntimate apparel, swimsuits, and suggestive clothing.
MaliciousMalcious intent to harm users or steal intellectual property.  Includes malicious software and associated sites.

Related: Phishing, Suspicious, Potentially Unwanted Software
MarijuanaPromotion of marijuana/cannibis and paraphernalia
Marketing/MerchandisingDirect marketing services
Media SharingAllow users to upload, search for, and share media files
MilitaryArmed forces
Mixed Content/Potentially AdultGeneral image/video sites that may return adult content along with non-offensive content.
NewsGeneral news sources
Non-Profit/AdvocacyCharitable and non-profit organizations promoting and supporting a cause.
NudityNude or seminude representations of the human body, including art, nudist or naturist.
Parked SiteParked, for monetized placeholders or no meaningful content.
Peer-to-Peer (P2P)Peer to peer/torrent clients and network for sharing files.
Personal Sites/BlogsPersonal sites that are not focused on a specific topic that has another specific category.
PhishingCounterfeit web pages that duplicate legitimate business web pages to steal private information from users.
Piracy/PlagiarismIllegal sharing of copyrighted media (software, music, etc.) and school cheating information
Politics/OpinionPolitical parties, groups or individuals promoting a point of view on a topic or issue.
PornographySexually explicit material
Potentially Unwanted ProgramsUser tracking or annoying software programs
Productivity ApplicationsBusiness-related web applications
Real EstateReal estate (buildings, homes, apartments) and related topics
ReferenceGeneral information for topics that don't have a specific category.
ReligionOrganized, traditional beliefs and practices, including major global religions.
Remote AccessRemote access to another computer
Restaurants/FoodRestaurants and food-related topics
Scam/Illegal/UnethicalFraudulent sites or information promoting breaking the law.
Search Engines/PortalsGeneral Internet search or general directories of the Internet
Sex EducationNon-pornographic information on reproduction, sex practices, sexually transmitted diseases, sexuality, abstinence, birth control, etc..
ShoppingStores for product or services that don't fit into a more specific category.
Social NetworkingSocial communities
Society/LifestyleDaily life, beauty & fashion, home & garden, pets
Software DownloadsSoftware and app downloads
SpamAssociated with email spam campaigns
SportsSports news and information
SuspiciousElevated, but unconfirmed security risk
TelephonyPerson-to-person VOIP or digital calling services
TobaccoPromotes use of tobacco
TranslationAllows translation of a web site or text to another language
TravelTravel and related topics (vacation transportation, lodging, activities)
UnratedUnknown categorization
URL RedirectDoesn't provide content, only redirects to another location
VehiclesVehicles, including autos, boats, motorcycles, etc.
Video/MultimediaLive streams or downloaded video clips
ViolenceEncourages, glorifies or displays graphic violence against others or self (suicide).

Related categories: Hate/Discrimination
Virtual MeetingsMulti-person virtual meeting services.
WeaponsSales, reviews, or descriptions of weapons and modifications