Incredibly useful. We just released a widget, and will definitely be using this to make sure its bullet-proof.
We just launched a widget too and were surprised by how hard it was to stop the cascade. This is pretty useful.
This is probably the fifth "Why didn't I think of that?" thing I've seen on HN today. Really cool stuff... bookmarking it in case I need it one day.
The exact thought I had. Having just released a widget this weekend I had thought about how to give it a thorough test. I'll just try it out on some different blog platforms was my sad idea. Then, this today. Thank you very much Gabriel!
Is the "!important" thing part of a coming arms race? Must admit I have not encountered it before. Can they be combined (!important !important or !veryimportant,...), and in a couple of months all style sheets have to be !supermegamegaimportant?
This is one of those times I pat myself on the back for reading the specifications directly ;P
This feature sucks. So once stylehseet authors start using !important everywhere, users will have to use !important everywhere, too. Then in the next incarnation they will introduce a !moreImportant property to overide the !important setting of the user stylesheet.