The basic idea of applying a theme to an application is that the application can be presented in a nice manner. In the case of Word Press Theme System, the user is provided with an option to change the way the website looks. In common terms, this would imply applying a skin on the website. However, more than just the design is changed with consideration given to the way the website material is  also presented.
A WordPress Theme is a collection of files that work together to produce a suitable graphical interface while keeping the underlying design intact. The collection of files, called template files, may include customized template files, image files (*.jpg, *.gif), style sheets (*.css), custom pages as well as any necessary code files (*.php).
The newer versions provide two convenient features: Physically Separate Components that enable the user to define separate PHP files for different components on the site. This allows the creation of unique designs and improved functionality for many pages. The ability to quickly change the layout and design is provided by just changing the theme on the website and flipping a switch in the admin panel.
With a clear idea of what a WordPress Theme System is, we can now learn about the WordPress Theme Selector 1.0. As the name implies, the WordPress Theme Selector enables the user to select the best theme that would suit his/her wordpress website. A suitable theme can be chosen from a list of high quality themes which are free for both personal and professional use. Some themes are able to display ads as well.
WordPress Theme Selector saves the user time and money by helping the user to choose from over hundreds of free themes, the best possible theme for a WordPress website from its main window.