Sometimes it happens that your website is penalized or blacklisted by search engines which is explained by use of wrong or outdated techniques for getting high rankings. In this case your traffic is damaged and your site is excluded from search lists and can be blocked. In order for you not to get in trouble with search engines let’s identify key factors you should avoid.

1. Gateway Pages
Gateway (or doorway) pages are created and optimized for being ranked by search engines but include no certain content. As a rule, doorway pages lead the visitors to the main pages of the site where they can finally see the real content.

2. Mirror Websites
These are websites which resemble each other but have different URL addresses. Earlier this trick brought high rankings but now search engines penalize and blacklist mirror websites.

3. Excessive Page Submission
Many search engines assume submitting a page not more than once in 30 days to be normal. So if you submit the same page to search engines too often you also can be penalized and your website may not be included in rankings.
Another reason for being blacklisted because of page submission implies using automated software. A lot of search engines are against automated submissions considering them a spam and accept only manual ones.

4. Irrelevant Keywords
If you use keywords that have no reference to your page trying to get high rankings, search engines will definitely penalize you and your website will be blacklisted very soon.

5. Hidden Text
Sometimes designers use invisible text making it the same color as site background so the visitors can not see it. This text consists of list of keywords and phrases and is aimed for the search engines. But this trick is no longer successful and ends with blacklisting.

6. Shared IP
Even if you don’t make use of any technique listed above you may experience problems with your website rankings because of shared IP address. So try to deal with hosts that provide you with your own IP address which is not shared with unreliable websites causing problems.

So now you are aware of the main blacklisting reasons and know how to decrease chances to be penalized by search engines.