SEO experts often forget that there are three major search engines. While there is no doubt that Google is the number one with the most searches and Yahoo! manages to get about a quarter of the market, MSN has not retired yet. It holds about 10-15 percent of the searches (according to some sources even less – about 5%) but it has a loyal audience that can't be reached through the other two major search engines, so if you plan a professional SEO campaign, you can't afford to skip MSN. In a sense getting high rankings in MSN is similar to getting high rankings for less popular keywords – because competition is not that tough you might be able to get enough visitors from MSN only in comparison to the case when you have optimized for a more popular search engine.

Although optimizing for MSN is different from optimizing for Google and Yahoo!, there are still common rules that will help you to rank high in any search engine. As a rule, if you rank well in Google, chances are that you will rank well in Yahoo! (if you are interested in the tips and tricks for optimizing for Yahoo!, you want to have a look at the Optimizing for Yahoo! Article) and MSN as well. The opposite is not true, however. If you rank well in MSN, there is no guarantee that you'll do the same in Google. So, when you optimize for MSN, keep an eye on your Google ranking as well. It's no good to top MSN and be nowhere in Google (the opposite is more acceptable, if you need to make the choice).