christnonani
New Member
The spiders or crawler actually make it easy to search the best types of sites. They verify the content of the site and then modify the ranking of sites accordingly. While crawling, these spiders can find out the ethics of human being. Spiders thoroughly check the various types of issues like keywords, content and its quality etc. Apart from these they also keep track on the inbound links of the site. They look for one way link in the site. If these spiders find any types of unethical methods of optimization, they penalize the site and block it in future.