Search within a site: The Google juggernaut rolls on

This is very cool:

Using the Site Search feature, you can narrow searches to a specific website [admissions site:www.mit.edu]. But what many people don't know is you can also use Site Search to narrow searches to a top level domain, which I found handy during tax season: [1099 site:gov].
Right now, Site Search can be used for top level domains (.org, .edu, .mil, .com, and .net), as well as country domains like .it (Italy) or .sz (Swaziland). As more of these come into play, topic-specific searching could become even easier. Via the Google Blog

Hmm. If you are a blogger.com user, here is a work around for categories. Did I hear 'How do I do that now?' Grrr. Think.

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