restrain google results (date range)

I was waiting for this feature for a long time. Especially if you are searching for linux related topics, it's usefull to restrain the results.

Google's web search toolbelt has been updated and it now includes an option that lets you find web pages from a user-defined period of time. After performing a search, click on "Show options", select "Custom date range" and enter at least one of the two dates.