Steve Rubel re-mentions blummy on his blog. Thanks a lot!
I'd like to take this chance to show you some of the lesser known blummlets (or bookmarklets if you prefer). Take a look at how I have configured my blummy.
The favorite of my blummlets (and in this case it deserves to be called like that, as it is an image), is the Alexa blummlet on the bottom. I just have to open blummy on any page on the web and I can instantly see how much traffic it has (well as far as you can count on Alexa on that).
When you add the blummlet you might want to resize it to fit yours. So first add it to your blummy, then resize the blummlet by holding shift and drag from within that blummlet. Voilá.
Using click2zap you can remove unnecessary text or links from a web page before you print it. You can click on a paragraph, a red dotted border will appear. You click again, it's deleted. Very neat.
What Google Notebook has added to Firefox, has been possible through Blummy for a long time. Cross-browser.
When you surf around you can use the BlummyWiki to store information you find on a page for later use. Or maintain a list of your most often visited pages. Most useful thing about it is that can use the same blummy account on multiple browsers and multiple computers.
Andy Roberts already had some ideas what to do with the BlummyWiki. Check it out.