[martin.ziegert]

White Hat SEO techniques includes any technique that would suggest to appear like if it's done by real users/visitors or what is suggested as "organic" in SEO terms.

Black Hat SEO techniques are all of the stuff that doesn't appear "normal". Let me give you few examples:

- Using automated services for generating identical content on dozens or even hundreds of different sites/blog/forums on frequent basis
- Leaving a number of backlinks leading to a specific site that doesn't correspond to the real traffic of the website. Let's say that a certain website has 10 visits per day that equals to 300 a month. If you leave 300 backlinks or even more leading to your website with 300 visits per month is Black Hat technique, because think about it, would really each visitor leave a backlink to your site somewhere???

So, you have to kinda think about it and use common sense. If anything that doesn't appear normal in terms of getting the monthly traffic to your website is considered as Black Hat techniques usage.