Tumblr is great way of maintaining your blogs. Here you can write your own posts, or import posts from other blogs, flickr, del.icio.us , or other places. All in all, great way to combine all your blogs, flickr, public del.icio.us tags etc. Even if you don't post regularly on your blogs, it always seeks updates from all the sources you have allowed and keeps itself updated. It is in a primitive stage where it does allow users to play with its interface as much as normal blogging sites allow you but just one feature of integrating several accounts brings it apart. Even if you don't have much to write you can post something here. Here is my tumblr site: http://tumblr.kumar-anurag.com/
You can configure tumblr to point it to your site, as I have done for mine. So, that's an added advantage!
So, whether I post on http://blog.kumar-anurag.com or http://picture.kumar-anurag.com or http://www.flickr.com/photos/anruagkumar , it imports it all and shows them on http://tumblr.kumar-anurag.com