A website can be one of the best tools for your business (in fact, for some people, their website is their business!), but if you fail to understand SEO, your website is unlikely to do you much good. For instance, if you sell metal detectors, you may have a website, but when someone searches “buy metal detectors,” you might be back on page 80 of the search – in which case, anyone searching for metal detectors will never stumble across you! If you understand SEO, however, you could get your website on the first few pages when someone searches “buy metal detectors” – which would make it far more likely that people will stumble across your site (which means it is far more likely you will make more money!).