Yesterday, I shared directions on how to download the content that is on a Posterous Spaces blog. I shared those directions in response to the distinct possibility that Posterous Spaces could be closing down. Even if you have a self-hosted WordPress blog it is still a good idea to download your content so that you have an offline back-up of it just in case the worst happens.
Creating an offline copy of your blog's content is not as difficult as you might think. I've outlined the steps for downloading the content of Blogger, WordPress, and Edublogs blogs below. On all three platforms when you download your content you're creating an offline copy and all of your current content stays online.