Onfolio - acquired by Microsoft
I've been a long-time user of Onfolio, a great tool to collect and organize all kinds of information, documents, snippets, etc., esp. when surfing the web. So I was very positively surprised when I read that we (Microsoft :-) acquired this technology and make it available for free as part of the Windows Live Toolbar. This is cool - give it a try, you'll love it.