I have tried, for a long time, to stay away from tumblr, but a few days ago I could no longer resist. I set up a small account and became immediately hooked! The photography of all those pictures are truly fantastic! I often find myself spending every spare second, seeing what is new on tumblr. I have tried adding a few of my own posts as well, but it is nowhere near as good as most of the others. I just felt the need to mention this.
http://www.the-creative-explosion.tumblr.com