An XML sitemap is a more technical version of the HTML sitemap, marked up with code so that search crawlers can make sense of your data. For example, verify that there's only one version of your website that's able to be browsed. I'm not a big fan of manufactured goods …

Think of Amazon. They probably have a few best-selling products, but the majority of their retail revenue comes from a wide variety of things that aren't bought anywhere nearly as often as their best-selling products. Similarly, if we were to rank the popularity of the songs played in the last …

There are many software programs that automatically spam forums and blog with comments, and these programs normally build anchor-rich backlinks, which means a keyword phrase is used in the place of a real name. In a time when attention spans are shorter than ever, you'd expect that shorter and easier …