Name a few Black Hat SEO techniques.

[Kailash]

Name a few Black Hat SEO techniques.

[Pihu]

A few black hat SEO techniques are:

Link Farming

Hidden text

Gateway or Doorway pages

Cloaking

Keyword Stuffing

[SKS]

I don't think it is that hard to find on Google if you Google the same because there are many blogs and articles available for the same.

[NoahKlindon]

Cloaking
Hidden Text
Keyword Stuffing
Link Buying
Over usage of H1 tags

[swapna8]

The following tactics are considering SEO black hat techniques:
1. content automation
2. doorway pages
3. hidden text or links
4. cloaking
5. keyword stuffing etc...

[deepaksh]

1. Content Automation
2. Doorway Pages
3. Hidden Text or Links
4. Keyword Stuffing
5. Reporting a Competitor (or Negative SEO)
6. Sneaky Redirects
7. Cloaking
8. Link Schemes

[yuva12]

Black Hat SEO Techniques :

Keyword Stuffing
Link Exchanges
Duplicate Content
Comment Spamming
Google Bombing
Low quality content

[imriakapoor]

Content Automation.
Doorway Pages.
Hidden Text or Links.
Keyword Stuffing.
Reporting a Competitor (or Negative SEO)
Sneaky Redirects.
Cloaking.
Link Schemes.

[RH-Calvin]

- Duplicate content
- Cloaking
- URL masking
- Hidden links and texts
- Keyword stuffing

[himanshu]

Keyword Stacking and Keyword Stuffing
Tiny Text, Hidden Text, and Hidden Links
Cloaking
Doorway Pages or Gateway Pages

[riya]

Link Farming
Hidden text
Gateway or Doorway pages
Cloaking
Keyword Stuffing