web toolbar of web 2.0 apps... outrageously great plugin for firefox. It might be powered by Conduit. I went to Conduit and created a toolbar of my own design to distribute to friends. Try it! http://springbar.ourtoolbar.com/
A tumblelog is a quick and dirty stream of consciousness, a bit like a remaindered links style linklog but with more than just links. They remind me of an older style of blogging, back when people did sites by hand,