How Many technique in black hat seo..?
 

Hello friends,

How Many technique in black hat seo..?

TOP 5 BLACK HAT SEO TECHNIQUES
1 Hidden Content.
Top of our list of black hat SEO techniques is hidden content.
2 Meta Keyword Stuffing.
There are two Meta tags that are generally used to inform search engines of the content on the page.
3 Meta Keywords.
4 Doorway or Gateway Pages.
5 Link Farming.

Hi

Unrelated Keywords. ...
Keyword Stacking and Keyword Stuffing. ...
Tiny Text, Hidden Text, and Hidden Links. ...
Cloaking. ...
Doorway Pages or Gateway Pages. ...
Bait-and-Switch or Page Swapping. ...
Duplicate Content or Mirror Site. ...
Spam Blogs or Splogs.

these are the black hat techniques when you are implement these techniques on you site than google will give you punishment.
1 Hidden Content.
2 Meta Keyword Stuffing.
There are two Meta tags that are generally used to inform search engines of the content on the page.
3 Meta Keywords.
4 Doorway or Gateway Pages.
5 Link Farming.

Keyword stuffing
Duplicate content
Doorway pages

There are many techniques in Black Hat SEO and very dangerous to do, read the Google's Guidelines and you will better understand the what is the Black Hat Techniques that affect your SEO efforts.