malicious Techniques for publicity sites (seo)

Creating websites for search engines and publicity sites seo is very useful in the process of e-marketing, there are many techniques that make enhancing your success through different SEO strategies.
But despite the success of creating sites SEO, there are some practitioners malicious who tend to see the creation of search engine optimization such as war, and search engines do anything to win the competition, whether it's fair or coercion.
These white hats makers with other search engines such as colleagues or partners who can help them push and business ties to their own customers' sites.
It may happen when he was blocking a site or a web page different content to the search engine spider certainly in opposition to the human user.
The block is one that would convey a copy of a page to an Internet user, and describe the various search engine.
And you will notice a blocked page filled with words tagged with is that the site wants to make it rank high.

This is done by blocking programs that weighs the IP address of the other party to a database of known IP address that comes from a specific search engine spider.
If there is a match in the IP address on the list, it serves a page where written especially for the search engines.

The block has a number of good reasons, which include increased advertising and promotion, and if you are trying to control your rankings in the various search engines, it may result in to punishing your site or may be prevented from appearing on the various search engines.

And e-mails unsolicited "spam", and keyword stuffing is a long list of words in the content as well as the symbol on the page, making it unreadable.
Do you see a page that displays over a declaration with some keywords? It is clear that the site is trying to arrange its own thread.
This is known as the word (spam) e-mails from spam only one party that most SEO companies are trying to do to increase your page ranking.

It may not notice that the page is visible text, title tags, meta tags and labels comment.
If the page is repeated a certain keyword over and over again, Google has put a candidate for ease of arrangement or what is much worse, ban the site.
  And density of keywords can be tricky too, but after that the general rule allowed is 3% to 12% is the percentage that site can be used only keywords and will to punish and ban by the search engines and will lose a lot of visitors.

And you will notice that there are some hidden text in SEO strategies, and this happens when a text or a link is not visible to visitors to the site but can still be considered by the search engines.
If this happens is hidden before, and people have used small fonts to hide the text or they even use the same color for the background.

That makes them able to put some of the links that are not visible, but long ago noticed by the search engines, this is why they have come up with another strategy this time.
When used some signs that are set to hide the text on the page, and this is hidden strategies if they are left unseen but search engines have their own technique to detect the invisible links so it is better not to do it at all.
Doorway pages are those that are exclusively for good rankings in the various search engines, and notes that some of the pages are ugly and contains some clauses do not have anything to do with this subject, and most pages are not part of the movement of the ordinary for the site, which is called thread isolated.

The technique can malware in the process of creating and publicity sites SEO software to be used very well to filter or create doorway pages, and this happens when some work and search keywords on the page.

You may notice some of the sites linked to other sites that are not connected at all, just some of the sites linking to other sites that are part of its strategy.
Now, you will find this e-mail is spam really (spam).

And if you are going to place your website, make sure you avoid these things and keep your SEO marketing is fair, does not think it's competition, and must be at thinking about how you can increase your site's ranking to some extent.