There is a built in backup facility in Edublogs and Wordpress. Simply select Manage, Export, Download Export File. On downloading, an XML file is created and can be saved to your computer.
This file contains your posts, comments, custom fields, and categories. Importantly, once you’ve saved this file, you can then use the 'Import' function to bring back the blog - should disaster strike!
Unfortunately, no automatic backup in Blogger but Blogger Backup is a handy utility that enables you to back up all your Blogger posts and comments to your local hard drive.
Of course, Blogger Backup also enables you to restore your posts should it become necessary. Thanks Amit for recommending this software.
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