There is already a rather popular WordPress plug-in that will automatically backup the databases associated with your WordPress blog and you can have this plug-in email the backup files to you on a regular basis. However, that’s only one part of the equation. What about your themes, uploads, and other information?

To get a comprehensive backup of your blog, you may want to consider Automatic WordPress Backup. Unlike the plug-in that only backs up the database, this plug-in provides a complete backup. According to the official page, you get a back up of your WordPress database, themes, plugins, uploaded files and setting files. This way, you can fully restore your site should something arise.

The system is automated, so it can make the back up on its own. It also uses Amazon S3, so you can achieve very good reliability. You can initiate a manual backup too, which comes in handy before you do any new updates or upgrades that may “break” your site.

For more information, point your browser to WordPressBackup.org. Note that this plug-in only works with Linux/PHP5 servers, so do not use it if you have Windows servers and PHP4.