I do NOT recommend using black hat SEO but here are a few techniques:

Cloaking - showing a page that depends on whether the visitor is a search engine or a human
Using hidden text, or using the same color for the text and background of the site.
Other black hat SEO techniques include meta tag stuffing, keyword stuffing, doorway pages, hidden links or link farms.

Feel free to add other techniques.

This post was last modified: 07-21-2008 04:30 PM by unsingurscop.

I just now starting to read about black hat method, anyway you can just get a ban in website nothing more , i think police will not searching you for arrest ! :P