All the below mentioned are pure black hat seo techniques...by this you can't get good promotion of your business at consistently..So better to avoid these kind of spam techniques to make your business future otherwise we definitely get punishment from Google...Here i mentioned to give some awareness on spam techniques...

1. Hidden text
2. IP deliver
3. 301 redirects
4. Throw Away Domains
5. Cloaking
6. Paid links
7. Keyword stuffing
8. Automatically generated keyword pages
9. Mispsellings
10. Scraping
11. Ad only pages
12. Blog spam
13. Duplicate content on multiple domains
14. Domain grabbing
15. Fake news
16. Link farm
17. New exploits
18. Brand jacking
19. Rogue bots
20. Hidden affiliate links
21. Doorway pages
22. Multiple subdomains
23. Twitter automation
24. Deceptive headlines
25. Google Bowling
26. Invisible links
27. Different content for search engines than users
28. Hacking sites
29. Slander link-bait
30. Map spam

Yes I agree, You should not use these techniques to rank in search engines. You may get penalized by Google.

I m new in SEO and this list will help me to know that what do's and what not do's.