I thought it was the name of the blog that I will be reviewing and then I realized that it was not. Serendipity Users is a blog whose aim is to help users of the blogging software called Serendipity. Serendipity is a PHP based blog and web-based content management system. The latest release of Serendipity is version 1.3. It was released on 18 March 2008 under the BSD license... So that's what Serendipity is... and the blog well it is the best are to start learning tweaking your Serendipity blog.