untangling_the_web

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Keep in mind that Google Blog Search only indexes the site feed, not the full
content at the website that originated the feed.
Google 810g Search indexes feeds dating back to January 2000. Also, one of the big
advantages of the XML format is that it, unlike HTML, includes date/time data, which
means you can use Google 810g Search to find information from a specific day or a
range of dates. Google 810g Search will also enable users to search entire blogs or
specific posts.
Some of the Google Search operators work in Google 810g Search and it has its
own unique operators, too, as the About Google 810g Search page explains:
All of the standard Google Search operators are supported in 810g Search. These
include:
~ link: [very useful in finding who's linking to whom]
~ site:
~ intitle:
Additionally, 810g Search supports the following new operators of its own:
~ inblogtitle:
~ inposttitle:
~ inpostauthor:
~ blogurl:
For example, a search such as [mandolin inpostauthor:Graham] will show you posts
about mandolins written by people named Graham. Note that you can also use the
Advanced Search option to achieve the same effect.
In addition, you can restrict your results to anyone or any combination of 35
languages using the Advanced Search option. Google 810g Search will also give
users the option of subscribing to the blogs in the news aggregator of your choice.
The main drawback of Google 810g Search seems to be that it indexes only the
content of feeds and often what is syndicated in a newsfeed is very sparse.
Technorati wins hands down on this point because it does do full text searching.
Google may eventually decide it needs to do so as well. After all, this is a beta
version.
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