Name some of the few black hat techniques that one should avoid

[Rscomp]

Name some of the few black hat techniques that one should avoid

[MVMinfotech18]

Link farming, doorway pages, cloaking, keyword stuffing and hidden text

[PrimeItSolution]

1. Unrelated Keywords
2. Keyword Stacking and Keyword Stuffing
3. Tiny Text, Hidden Text, and Hidden Links
4. Cloaking
5. Doorway Pages or Gateway Pages

[fisherinjurylaw]

Not 'any' but 'all' Black Hat techniques should be avoided

[RH-Calvin]

Some black hat techniques to avoid are:

- Duplicate content
- Keyword stuffing
- Link farms
- Paid backlinks