Lifehacker - Display the Date a Web Page Was Published in Search Results - Search Techniques
http://lifehacker.com/5239562/display-the-date-a-web-page-was-published-in-search-results

This is invaluable! (Especially helpful for things like writing Silverlight 2 code, where the documentation is largely in blog posts, and the way to make CustomControls changed significantly between Beta 2 and RTW.)

&as_qdr=y15

Display the Date a Web Page Was Published in Search Results

Two years ago, we compiled our 10 favorite Greasemonkey scripts, the site-fixing wonders you can load into Firefox's Greasemonkey extension for a better browsing experience. We've updated our picks, and there's a lot that's new.