Automatic Content Linking
You've probably seen websites, usually information portals, that have words linked throughout their content which - when you hover over the word - displays a small description of the word, usually followed by an Ad.

These links are not added manually to the content - that would take an age - but are added automatically by a keyword system that parses through the content, adding links to relevant keywords as it goes.

Outside of portal / information linking, you don't often see this practise, but it's something that all sites should be doing.

If you're content is littered with buzzwords and phrases relating to your industry, why not link those words to other pages on your site, or those of your partners? If someone's not sure what voip is, rather than letting them type it into Google and get the explanation from one of your competitors, help them get the information from your site.

I'm calling the method of automatically adding links into content content profiling, and example of which can be seen here.

The beauty of it is it's all automated, so once you added the code to your site and set up your keyword database, the rest is done automatically.

The disadvantage is the ease of which you can add any word under the sun to your keyword database, the end result of which is your content being little more than a page of links.

You can avoid this by fully Profiling your content - Take into account the category of the content, even add limits to the proliferation of links within a single element of content.

The basic rule is that you want to provide as much useful information to your visitors as possible, and the generate a natural flow of traffic between your sites, rather than those of your competitor...however you don't want to be pumping out pages full of links, which are likely to annoy not only your visitors, but also Search Engine Spiders.