BackupMyBlog. Is more of a description really necessary? Okay, okay... BackupMyBlog is a script and web service that will back up any MySQL-based blog like WordPress and Movable Type. It works like this: You register for BackupMyBlog and copy a provided PHP script to your web server (or let BackupMyBlog do it for you). Then the BackupMyBlog server uses that script to query your blog's database and backup your entries every day. Your database username and password are never transmitted (they are stored only on your server) and "each backup is secured by a large session key that the client uses to ensure that it is talking only to the BackupMyBlog backup servers," so it seems secure enough for your average blog. BackupMyBlog offers each user 10MB of storage, and backups are compressed which makes for an average of 30 to 50 days worth of backups (though I should point out that a manual backup I made of my old 2,500-post blog awhile back is about 2.5MB compressed, so unless BackupMyBlog's zip-fu is a lot stronger than mine, YMMV). BackupMyBlog is currently in beta and free to use--no word on whether that will change when it's out of beta.

[Via Lifehacker]