BlackHat SEO - Why you shouldn't do it.
BlackHat SEO is a term used to describe tactics that are supposed to increase your position in the SERPS, But in reality BlackHat SEO will do nothing apart from get you banned from google.
In this post i will go through a few of the tactics and techniques used in blackhat SEO so you can avoid accidentally putting them in place, I would strongly advise against using any of these blackhat SEO methods.
CloakingCloaking is a blackhat method that involves displaying one page to search engine bots, and a different page to your visitors.
The idea is to get a keyword stuffed page listed in the SERPS, But show a more readable page to visitors.
Leader PagesLeader pages are a set of pages, all showing basically the same information, but each designed to rank well in different search engines.
This doesn't work anymore for 2 reasons, Google may penalize the pages for duplicate content, And people don't really worry about SEO for MSN and Yahoo anymore, it's all about google.
Link FarmsLink farms are like mass produced link exchanges. They usually involve you placing some code on your site that automates the process.
This is a bad idea because you have no control over what links are being displayed on your site, so god knows how many banned sites you are linking to, and linking to banned sites can see you being banned too.
Hidden TextHidden text is sometimes used to hide keyword stuffing. It is when the text on the page is the same color as the background so it is invisible to your visitors, But visible to spider bots. The bottom line is, If you need to hide anything you are doing something very wrong with the SEO of your page.
This is by no means an extensive list of BlackHat techniques, But it is the most common forms of blackhat tactics.
If you think you have done any of this on your site my advice would be to remove it right now. If you think you can use an unfair method of increasing your SERPS and not get caught, You are very wrong. And when you are caught your site will be completely removed from the google index and the PR bar will be grayed out.