Developed by Michael Torbert and with over 19 million downloads, the All in One SEO pack is the biggest SEO plug-in for WordPress available. But, it still only has a 3.9 out of 5.0 rating. It boasts an easy-to-use, right-out-of-the-box feature; just install, and you are set. While it is regularly updated, it is still missing many features that would make it the unchallenged SEO champion. This product is being advertised as free, but it witholds many features unless you upgrade to the paid version. Users of the paid version have reported numerous bugs and issues. With that being said, it does have many features that the competition does not. One of these features is that it automatically generates the META description and the focus keyword, but still gives you the ability to change them to your needs. But the biggest draw to this tool is its simplicity; it doesn't overwhelm you with options, but still has the basic functionality that both an inexperienced and an advanced user would need.