Finding out more about the way that search engines function will be very beneficial when striving to implement some SEO techniques. It will help you gain significant advantage and adjust your approach. There are many ways that search engines use links. Link building itself refers to creating connections with the websites that have similar goal and the type of the work as you do. Making connections with that kind of websites will increase your credibility and the number of visits. Local popularity concept means that links from sites within a topic-specific community matter more than links from general or off-topic sites.
You have probably heard about the term back linking, which is a link received by a web node. These links are important because they influence Goggle PageRank and are important in order to have a well optimized website. Anchor text is related to a situation when dozens of links point to a page with the right keywords which means that the page has a very good probability of ranking. Bear in mind that internet contains lots of spam and there is even the information that more than half of the web’s pages are spam, so in order to weed out this irrelevant content, search engines use systems for measuring trust. Most of them are based on the link graph. Work on gaining links from trusted domains, because that can have positive effects on boosting scoring metric. If you are concerned about which domains are trusted, some examples are universities, government websites and non-profit organizations. They represent high-trust domains.
People use social networks more and more and lots of content gets shared over Facebook, Twitter and Google+ and even though search engines treat socially shared links differently than other types of links, they still notice them. No one can deny that social channels get more and more importance, but there is much debate among search professionals as to how exactly search engines factor social link signals into their algorithm.
Be careful about linking your websites to others, because some of them can be spams. If it is a spam, there is a great chance that it will go both ways. Search engines will perceive all of those websites as they are the same which may have a negative impact on your website. Work on maintaining continuity in link building, since they get old over time. It is important to earn links to your website, but also to continue to earn additional links over time, because this will send fresh signals to search engines so your page rank will increase. Some time ago, social bookmarking sites may have been a source of valuable links but the link spammers have ended it, since the most of the credible bookmarking sites recognized that their platforms were being abused by link spammers. Setting aside link spammers, who see all links as equal, identifying a good link target is very simple. A good link target is a web page whose readers might be interested in the content of a page on your site.