I am experimenting with WordPress the popular blogging platform. My reason for doing so is to see how it works as a social blogging system. I will share my findings with you and let you know what my experience is. Some day we might have to migrate there because Tumblr could radically be different because of Yahoo. My advice is to open a blog there and test it for yourself. Stay tuned for more information.
The Tumblr Years of Tony Burgess 