This category includes the following types of websites:

• Web resources containing any photo or video materials depicting genitals of humans or humanoid creatures, acts of sexual intercourse or self-stimulation performed by human beings or humanoid creatures.
• Web resources containing any text materials, including literary or artistic materials, describing genitals of humans or humanoid creatures, acts of sexual intercourse or self-stimulation performed by human beings or humanoid creatures.
• Web resources devoted to a discussion of the sexual aspect of human relations.
• Overlaps the "Internet communication" category.
• Web resources containing erotic materials, works that provide a realistic portrayal of sexual behavior of humans, or works of art designed to stimulate sexual arousal.
• Websites of official media or online communities with established target audience that include special sections or articles on sexual relationships.
• Web resources devoted to sexual perversions.
• Web resources that advertise and sell items for use in sex and stimulation of sexual arousal, sexual services and intimate dating, including services provided online via erotic video chats, "telephone sex", "sexting" ("virtual sex").

This category includes the following subcategories:

• Audio and video.
• This subcategory includes web resources distributing audio and video materials: movies, recordings of sports broadcasts, recordings of concerts, songs, movie clips, videos, tutorial audio and video recordings, etc.
• Torrents.
• This subcategory includes websites of torrent trackers intended for sharing files of unlimited size.
• File sharing.
• This subcategory includes file sharing websites irrespective of the physical location of files being distributed.

This category includes web resources whose content is directly or indirectly related to alcoholic or alcohol-containing products, tobacco products, and narcotic, psychotropic and/or intoxicating substances.

• Web resources that advertise and sell such substances and paraphernalia for consuming them.
• Overlaps the "E-tailers, banks, and payment systems" category.
• Web resources with instructions on how to consume or produce narcotic, psychotropic, and/or intoxicating substances.

This category includes web resources containing any photo, video or text materials describing acts of physical or psychological violence directed against human beings, or cruel treatment of animals.

• Web resources depicting or describing scenes of executions, torture, or abuse, as well as tools intended for such practices.
• Overlaps the "Weapons, explosives, pyrotechnics" category.
• Web resources depicting or describing scenes of murder, fighting, battery, or rape, scenes in which humans, animals, or imaginary creatures are abused or humiliated.
• Web resources with information inciting acts that jeopardize life and/or health, including self-harm or suicide.
• Web resource with information substantiating or justifying the admissibility of violence and/or cruelty, or inciting violent acts against humans or animals.
• Web resources with particularly realistic portrayals or descriptions of victims and atrocities of war, armed conflicts, and military clashes, accidents, catastrophes, natural disasters, industrial or social cataclysms, or human suffering.
• Browser computer games with scenes of violence and cruelty, including the so-called "shooters", "fightings", "slashers", etc.
• Overlaps the "Computer games" category.

This category includes web resources with information about weapons, explosives, and pyrotechnical products:

• Websites of weapons, explosives, and pyrotechnical products manufacturers and stores.
• Overlaps the "E-tailers, banks, and payment systems" category.
• Web resources devoted to the manufacture or use of weapons, explosives, and pyrotechnical products.
• Web resources containing analytical, historical, manufacturing, and encyclopedic materials devoted to weapons, explosives, and pyrotechnical products.

This category includes web resources where profane language has been detected.
Overlaps the "Adult content" category.

This category includes web resources that offer users to participate financially in gambling, even if such financial participation is not a mandatory condition for access to the website. This category includes web resources offering:

• Gambling in which participants are required to make monetary contributions.
• Overlaps the "Computer games" category.
• Sweepstakes that involve betting with money.
• Lotteries that involve purchasing lottery tickets or numbers
• Information that can trigger the desire to participate in gambling, sweepstakes, and lotteries.
• Overlaps the "E-tailers, banks, and payment systems" category.

This category includes web resources that enable users (whether registered or not) to send personal messages to other users of the relevant web resources or other online services and/or add content (either open to public access or restricted) to the relevant web resources on certain terms. This category includes the following subcategories:

• Chats and forums.
• This subcategory includes web resources intended for public discussion of various topics using special web applications, as well as web resources designed to distribute or support instant messaging applications that enable real-time communication.
• Blogs.
• This subcategory includes blog platforms, which are websites that provide paid or free services for creating and maintaining blogs.
• Social networks.
• This subcategory includes websites designed for building, displaying, and managing contacts between persons, organizations, and governments, which require registration of a user account as a condition of participation.
• Dating sites.
• This subcategory includes web resources serving as a variety of social networks providing paid or free services.
• Overlaps the "Adult content" and "E-tailers, banks, and payment systems" categories.
• Web-based mail.
• This subcategory includes exclusively login pages of an email service and mailbox pages containing emails and associated data (such as personal contacts). This category does not include other web pages of an Internet service provider that also offers email service.

This category includes web resources designed for any online transactions in non-cash monetary funds using special-purpose web applications. This category includes the following subcategories:

• Shops and auctions.
• This subcategory includes online shops and auctions selling any goods, work or services to individuals and/or legal entities, including websites of stores that conduct sales exclusively online and online profiles of physical stores that accept online payments.
• Banks.
• This subcategory includes specialized web pages of banks with online banking functionality, including wire (electronic) transfers between bank accounts, making bank deposits, performing currency conversion, paying for third-party services, etc.
• Payment systems.
• This subcategory includes web pages of e-money systems that provide access to the user's personal account.

This category includes web resources designed to bring together employers and job seekers:

• Websites of recruitment agencies (employment agencies and/or headhunting agencies).
• Websites of employers with descriptions of available job openings and their advantages.
• Independent portals with offers of employment from employers and recruitment agencies.
• Professional social networks that, among all else, make it possible to publish or find information about specialists who are not actively searching for employment.
• Overlaps the "Internet communication" category.

This category includes web resources that act as an intermediary in downloading content of other web resources using special web applications for the purposes of:

• Bypassing restrictions imposed by a LAN administrator on access to web addresses or IP addresses.
• Anonymously accessing web resources, including web resources that specifically reject HTTP requests from certain IP addresses or their groups (for example, IP addresses grouped by country of origin).

This category includes web resources devoted to computer games of various genres:

• Websites of computer game developers.
• Web resources devoted to a discussion of computer games.
• Overlaps the "Internet communication" category.
• Web resources providing the technical capability for online participation in gaming, together with other participants or individually, with local installation of applications or without such installation ("browser games").
• Web resources designed to advertise, distribute, and support gaming software.
• Overlaps the "E-tailers, banks, and payment systems" category.

This category includes web resources with materials on public movements, associations, and organizations with a religious ideology and/or cult in any manifestations.

• Websites of official religious organizations at different levels, from international religions to local religious communities.
• Websites of unregistered religious associations and societies that historically emerged by splintering from a dominant religious association or community.
• Websites of religious associations and communities that have emerged independently of traditional religious movements, including at the initiative of a specific founder.
• Websites of inter-confessional organizations pursuing cooperation among representatives of different traditional religions.
• Web resources with scholarly, historical, and encyclopedic materials on the subject of religions.
• Web resources with detailed portrayals or descriptions of the worship as part of religious cults, including rites and rituals involving the worship of God, beings and/or items believed to have supernatural powers.

This category includes web resources with public news content created by the mass media or online publications that let users add their own news reports:

• Websites of official media outlets.
• Websites offering information services with the attribution of official sources of information.
• Websites offering aggregation services, of collections of news information from various official and unofficial sources.
• Websites where news content is created by users themselves ("social news sites").
• Overlaps the "Internet communication" category.

This category includes web resources with banners. Advertising information on banners may distract users from their activities, while banner downloads increase the amount of traffic.