There are several factors to consider when developing a text link strategy. A few concepts to consider…
Many sites use reciprocal links, also known as link sharing. Regarding this
strategy, websites agree to display each other’s links (commonly attained
through link exchanges) in an attempt to increase the number of back links that
register with search engines. While seemingly an effective way to increase a
site’s rank, there are a few drawbacks to this strategy. Generally, attaining
links through link exchanges can prove time consuming. Also, Google discounts
reciprocal links as an unnatural attempt to boost a site’s rank. Search
engines value one-way links over reciprocal links and also penalize sites that
have an excessive number of outbound links (links to external sites). Google
considers all these factors when determining search rank.
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In contrast to reciprocal links, one-way links are considered more natural.
Again, this touches upon Google’s view of link development being a natural
process the more closely it adheres to democratic principles. For example, websites
voted upon by other websites (via non-coerced one-way links) are considered
to have more natural links compared to websites that take part solely in link
exchanges.
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When Google first developed PageRank, it was thought links from sites with similar content (relevant links) were more highly valued than links from sites whose audience was interested in a different subject. That is, relevant back links were seen as having a greater chance at reaching the target market. Interestingly, current analysis indicates the search engines do not place increased importance on relevant links.
However, there are a few reasons why relevant links are important, regardless of the search engines’ methodologies. As mentioned previously, relevant links provide greater access to the target market. Also, it is likely the search engines will begin to incorporate link relevancy into their search algorithms when determining search rank.
Some sites have taken advantage of this perceived flaw by farming links out
to numerous unrelated sites. Search engine penalize these “link farms”
as sites that unnaturally inflate page rank. In fact, sites that buy links from
link farms are often penalized as well. This underscores the importance of purchasing
links from quality sites.
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It would seem an effective strategy to purchase thousands of one-way links,
from relevant sites, using the same anchor text. However, these are not considered
naturally occurring links. Varied anchor text registers as more natural than
back links that use the same keywords. Natural link patterns include the use
of phrases such as “click here” or “product name”. Many
successful companies use variations of keywords on sub pages throughout their
website. The result of this is that other sites inherently use varied anchor
text to link to these sub pages. These type of links, also known as deep links,
register as being more natural, as well as targeting other competitive keywords.
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Google also considers the quantity of back links from the same domain when determining whether links are natural. When sites develop naturally, they tend to have a high percentage of single page links from different sites. It might seem an effective technique to have thousands of links from a few sites in order to increase the quantity of and ease of access to back links, but Google considers such a tactic to be unnatural and one that unfairly subverts the PageRank methodology. Furthermore, Google uses an algorithm called Hilltop that looks for relationships between sites and can determine if links have common IP (Internet Protocol) addresses. The address provides a unique identification to a computer connected to the Internet.
As mentioned previously, Yahoo and MSN place importance upon the quantity of links as opposed to the quality and therefore do not currently penalize sites that have an excessive number of site-wide links.
Another important concept to consider is authority pages, which are sites that
have back links from many unique, relevant sites and are considered high quality
as a result. Back links from authority pages help to increase PageRank.
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Similar to purchasing links from different websites, it is considered more
natural to have back links from sites with varied PageRank. As sites develop
naturally, they tend to have back links from sites that encompass the PageRank
spectrum. Google considers sites with only high profile back links to be suspicious
and the site’s PageRank suffers accordingly.
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Outbound and inbound… where are the links pointing?
It is recommended that a page have no more than fifteen to twenty outbound links. Additional links dilute the benefit derived from that site and also increases a site’s risk profile. Fewer outbound links equate to increased value per link.
Again, inbound links are another term for back links. Simply put, links can
be broken down into two main categories – outbound and inbound. Outbound
links point to external web pages, while inbound links are those pointing at
the website in question.
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