You aren’t in control of your data if you can’t easily and frequently make useful backups onto your own computer and your own media.
I recognize that it’s hypocritical for me to say this as the lead developer of Tumblr, which does not yet offer an automated feature for users to download backups of their blog content. So I took some time this week and started to write one. I’m happy to announce that Tumblr will be releasing an easy backup tool in the coming weeks.
Heh, I like that way of thinking/doing. (And he definitely has my respect for developing Tumblr anyway.)