There are a wide range of popular and controversial adult products sold on the Internet. The following are some common categories： ### 1. **Sex toys** -**Vibrators, massagers**: These products are very popular among female consumers, but due to their sensitivity, they often cause controversy, especially in some conservative cultural environments. -**Inflatable dolls and physical dolls**: These products are in great demand among male consumers, but because they involve sexual, moral and ethical issues, they often cause social discussions. ### 2. **Sexual health products** -**Delayed sprays, lubricants**: These products are designed to enhance the sexual experience, but because they are directly related to sexual behavior, they often cause controversy, especially in advertising and publicity methods. -**Aphrodisiacs**: Although there is a certain market demand for drugs such as Viagra, they are highly controversial due to their side effects and abuse. ### 3. **Adult clothing and underwear** - **Erotic lingerie**: Sales of such products have surged on specific holidays (such as Valentine's Day), but due to their bold designs, they often cause ethical and cultural disputes. -**Role-playing costumes**: Such as nurse costumes, maid costumes, etc., although popular in some specific occasions (such as parties), they have also been criticized for their potential to promote gender stereotypes. ### 4. **Adult entertainment content** -**Adult videos and photos**: These content are very popular on the Internet, but due to privacy, copyright and ethical issues, they often cause legal and ethical disputes. -**Virtual reality (VR) Adult content**: With the development of VR technology, the immersive experience of adult content has become more and more popular, but it has also triggered discussions about technology abuse and ethical issues. ### 5. **Sex education products** -**Sex education books and courses**: Although these products are designed to popularize sexual knowledge, because their content directly involves sex, they often cause controversy in conservative societies. -**Sex toy sets**: Sex education toy sets launched by some brands, although they help raise awareness of sexual health, are also controversial because they directly involve sexual behavior. ### 6. **Adult subscription service** -**Platforms such as OnlyFans**: These platforms allow creators to publish and profit from adult content, but because they involve sex work, privacy, and ethical issues, they often trigger social discussions. ### 7. **Adult games** -**Adult-themed video games**: These games are very popular among specific groups of players, but because their content involves sex and violence, they often cause controversy. ### 8. **Sexual health testing tools** -**Venereal disease testing kits**: These products are sold hotly on the Internet, but because of their privacy and health issues, they often cause controversy. ### 9. **Adult social media and dating apps** -**Dating apps such as Tinder and Bumble**: Although these apps are not adult products in themselves, they are often used to find sexual partners and often cause moral and social disputes. -**Adult social media platforms**: For example, some sections of Reddit specialize in adult topics, which often cause controversy due to sensitive content. ### 10. **Adult-themed art and decorations** -**Sexually suggestive works of art and decorations**: These products are very popular among specific consumers, but because their content directly involves sex, they often cause controversy. ### Summary The hot sales of these products on the Internet reflect consumer demand for sexual health and entertainment, but due to their sensitivity, they often cause ethical, legal and social disputes. The degree of acceptance of different cultures and societies is different, so the sales and promotion methods of these products in different regions are also different.