There are a number of cryptocurrencies that are linked to projects or areas that many consider unethical, such as gambling and pornography. Here are some of these currencies and related projects:

1. **TRON (TRX)**: The TRON network is used in many entertainment and digital content applications, including adult-only platforms and illegal games.

2. **Verge (XVG)**: Verge has been used as a payment method on adult sites like Pornhub, reflecting its adoption in the porn industry.

3. **FunFair (FUN)**: It is a platform based on blockchain technology to provide online gambling games in a safe and transparent manner. FUN Codes are used as a means of payment within these games.

4. **SpankChain (SPANK)**: It aims to provide platforms for customers who want to consume adult content only, as it enables creators to display their content directly to consumers using blockchain to ensure transparency and security in payment processes.

5. **Decentraland (MANA)**: Although Decentraland is mainly used for virtual gaming and digital real estate, there are platforms within this virtual world that offer adult content and gambling games.

### Ethical and legal considerations

It is important for investors to be aware that these projects may be prohibited or illegal in some countries, and that dealing with them may involve legal and ethical risks.

Therefore, you should always do careful research and ensure compliance with local laws before investing or dealing with such currencies and projects.