The more popular and important a site is, the more links from that site matter. A site like
Wikipedia
has thousands of diverse sites linking to it, which means it's probably
a popular and important site. To earn trust and authority with the
engines, you'll need the help of other link partners. The more popular,
the better.
Local/Topic-Specific Popularity
The concept of "local" popularity, first pioneered by the Teoma
search engine, suggests that links from sites within a topic-specific
community matter more than links from general or off-topic sites. For
example, if your website sells dog houses, a link from the Society of
Dog Breeders matters much more than one from a site about roller
skating.
Anchor Text
One of the strongest signals the engines use in rankings is
anchor text.
If dozens of links point to a page with the right keywords, that page
has a very good probability of ranking well for the targeted phrase in
that anchor text. You can see examples of this in action with searches
like "
click here," where many results rank solely due to the anchor text of inbound links.
TrustRank
It's no surprise that the Internet contains massive amounts of spam.
Some estimate as much as 60% of the web's pages are spam. In order to
weed out this irrelevant content, search engines use systems for
measuring trust, many of which are based on the link graph. Earning
links from highly-trusted domains can result in a significant boost to
this scoring metric. Universities, government websites and non-profit
organizations represent examples of high-trust domains.
Link Neighborhood
Spam links often go both ways. A website that links to spam is likely
spam itself, and in turn often has many spam sites linking back to it.
By looking at these links in the aggregate, search engines can
understand the "link neighborhood" in which your website exists. Thus,
it's wise to choose those sites you link to carefully and be equally
selective with the sites you attempt to earn links from.
Freshness
Link signals tend to decay over time. Sites that were once popular
often go stale, and eventually fail to earn new links. Thus, it's
important to continue earning additional links over time. Commonly
referred to as "
FreshRank," search engines use the freshness signals of links to judge current popularity and relevance.
Social Sharing
The last few years have seen an explosion in the amount of content
shared through social services such as Facebook, Twitter, and Google+.
Although search engines treat socially shared links differently than
other types of links, they notice them nonetheless. There is much debate
among search professionals as to how exactly search engines factor
social link signals into their algorithms, but there is no denying the
rising importance of social channels.
This is dummy text. It is not meant to be read. Accordingly, it is difficult to figure out when to end it. But then, this is dummy text. It is not meant to be read. Period.
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