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It’s a known fact that search engines (read: Google) place a weighty importance on one-way inbound links when determining your placement in search results. Unfortunately, successfully link building takes a lot of time and energy, so it’s often put on the back burner. This isn’t only costly - it’s plain foolish.

Inbound links are one of the ways the search engine determines the quality and relevancy of your site. Every link that points to your website is a vote for your relevance. The more votes your site has, the higher it will rank in the search engines.

The web is ultimately nothing but links, pathways for navigation for both humans and search engine spiders (also known as robots, crawlers, and bots). Search engines crawl through links they find on one website to visit other websites, adding them to their index of sites and reviewing them for search relevance. Even within your site, spiders follow links from one page to another.

Some links have more value than others. To be successful at link building, you must learn to recognize each of these links. In the world of link building, there are four general types of links:

• URL Link - This is simply a website’s URL, written in such a way that clicking on it will take you to the site.
• Text Links (or static links) - This is the most common type of link, where you click on a word to follow the link.
• Image Links - Click on the image to follow the link.
• Dynamic Links - These links are in JavaScript. They work like any other link, except they have extra code behind the scenes. The code performs special functions, such as affiliate commission tracking or automatic feeds. Search engines cannot follow dynamic links.

You must also consider the nofollow attribute.

The nofollow attribute (or just ‘nofollow’) is HTML code used to instruct search engines to not count a link as a vote for relevance. This is very common on websites that allow comments, especially blogs, and is intended to reduce the effectiveness of search engine spam.

It’s important to keep in mind that search engines do not follow links that have the nofollow attribute applied. (Hence the name…)

To determine whether or not a page uses nofollow links, look at the site’s code. Right click on the web site and choose ‘View Source’ (From Internet Explorer, choose Page > View Source. From Firefox choose View > Page Source). If the nofollow attribute is applied it will be clearly visible within the page code as ‘nofollow’. You will find it either in the Meta tag section or within the code surrounding the actual link.

Some hardball SEO folks avoid nofollow links like the plague. The mentality behind this is that a link is useless if a search engine spider can’t follow it. Remember, human visitors can still use the links to find you. Don’t shun a web page using the nofollow attribute if the audience is a good fit with your site.

When you are ready to build links to your site, your links can go two ways:

1. One way links - A link from another website to yours with no returning link to theirs.
2. Reciprocal links - Another website links to your site, and you link back to theirs.

One way links have always been more valuable in the eyes of the search engines, much like a politician who gets a vote without giving a favor. However, each link has its own value based upon how relevant it is to your site, the text in and around the link, and how much authority the linking website has with the search engines.

In order for your inbound links to have any significant value, you need to focus on getting high quality links. As a rule, the more websites that link to your site the better. However, there is no question that 20 quality links can be much more valuable from an SEO perspective than thousands of low quality links.

So what makes up a high quality link? Imagine if Google had a link to your website on their home page. That would obviously be a quality link - A highly relevant, highly trafficked, highly linked page with tons of authority with the search engines.

Of course this analogy is a bit extreme, but the point is that value is usually pretty easy to spot. For a more realistic example, let’s say you’re a photographer specializing in wedding photos. If this were the case, links from informational sites or blogs related to weddings and photography would be quality links.

Now that you understand the basics of quality link building, the next step is keyword research, finding the key words and phrases to build into the text in and around your link.  Next week, we’ll talk about keyword research that gets your link juice flowing.