SEO tactics to avoid

Keyword Stuffing
Hidden text
Spammy blog comments
Doorway pages
Blog spinning
Link schemes

Yes methods are called sapmming . Once if anybody follow this techniques google will assign as a spam websites

Other SEO Tactics to avoid:

1. Duplicate articles or content - Every page of your site must have its unique contents
2. Duplicate meta tags - Every page must have different tags or keywords to avoid competition among your pages.
3. Borrowed contents or articles - You must write your own content and avoid plagiarism.
4. Low quality content- Your articles and contents must be interesting and must caught the eye of your target. Let your article speak about your company.
5. Redirects - Avoid many redirecting links. This can also be called link cloaking.

cloaking, spiined , stuffing