Tugadar, like many reputable web directories, typically discourages and may reject submissions that engage in unethical practices. While the specific guidelines of Tugadar may have evolved since my last knowledge update in September 2021, here are some examples of unethical practices that web directories generally frown upon:

1. Black Hat SEO Techniques: Tugadar may discourage submissions that employ manipulative or deceptive search engine optimization (SEO) practices, such as keyword stuffing, hidden text, cloaking, link schemes, or other techniques that aim to artificially boost search engine rankings.

2. Plagiarized or Duplicate Content: Submitting websites that contain content that has been copied from other sources without proper attribution or permission, or websites that have duplicate content across multiple pages or domains, may be considered unethical.

3. Malware or Phishing: Websites that distribute malware, engage in phishing attempts, or contain other harmful or deceptive practices are generally not accepted by reputable web directories like Tugadar.

4. Adult or Offensive Content: Web directories, including Tugadar, often have guidelines against accepting submissions that contain explicit adult content, hate speech, or other offensive material.

5. Violation of Copyright or Intellectual Property: Submitting websites that infringe on the copyrights or intellectual property rights of others, including the unauthorized use of images, text, or other creative works, is typically discouraged.

6. Deceptive Practices: Tugadar may reject websites that engage in deceptive practices, such as misleading users with false information, false claims, or deceptive advertising.

These examples are provided as general guidelines, and Tugadar's specific guidelines and policies may have additional or more specific criteria. To ensure the most accurate and up-to-date information, it's advisable to visit the Tugadar website and review their submission guidelines or policies directly.