Nowadays, search engines like google are placing more emphasis on incoming links to a website when looking for rank. The reason being is because they are hard to obtain from trusted sources (a “by the book” website such as the Dmoz directory) and it is a great way to partially remove the group of people who abuse the “on the page” factors of optimisation (page spamming). How is this so? Well, if you have someone who is abusing the “on the page” factors and they have no trusted links to their page (they will most likely not get any at all because of spam) then there is no chance of them obtaining a good listing. However, people have worked out ways in getting a large number of links, through link farms along with other tactics, regardless of the quality of their website. As the search engines are aware of this, it brings us to the main topic of how one link can be better than ten.
Obtaining one link coming from a trusted source can be quite difficult within the sense that they tend not to issue links to just about anyone. If you have a good website with relevant information, then you will definately get them. It is actually because of this one link from the trusted source can better a multiple of links off their websites. As this is “trusted” by search engines, it will likewise trust the websites it links to. If you have ten links from your best friends, it will help you in a few sense, but no where near around the main one link from the source like Dmoz, unless one of your friends has a very reputable website amongst the major search engines.
Having way too many irrelevant links could harm your website’s visibility in search engines like google. What exactly is meant from this has links from websites that have no regards to yours. A good example of this would be a website about cars linking to a different site about medicine (unless the sites are reputable and also have a good reason for your link i.e. there is a relationship made between cars and medicine). Search engines like google will pick-up on this sort of link and definately will provide no weight in improving your visibility. Obtain most of these irrelevant links, then djglva could be seen as spam (just like a link farm tactic) which will lower the recognition of your own website within search engine listings.
The key here is to concentrate on quality rather than quantity. Gaining a few good / relevant links will require you much beyond plenty of irrelevant links. To have these quality links, start off by placing your website in directories, but make sure to avoid any “on the page” spamming because this is not going to allow you to get accepted. Once search engine listings have acknowledged a presence of relevant links, follow-up into it and research some methods to get more. After some time, you will recognize that your website’s performance increases, because the links age, provided you may have performed search engine optimisation. Avoid acquiring the irrelevant links even though it could be tempting to see fast results. It will only be a matter of time before an internet search engine realises the spam tactic, and as we say “fast rise”, fast fall”.