Google recently announced that they have been working on a
secret project: a next-generation architecture for Google's web
search.
"It's the first step in a process that will let us push the
envelope on size, indexing speed, accuracy, comprehensiveness and
other dimensions. The new infrastructure sits under the hood of
Google's search engine, which means that most users won't notice a
difference in search results. But web developers and power
searchers might notice a few differences."
For those of you who are interested in search engine
optimization, you can check out the developer preview of Google's
new infrastructure at:
http://www2.sandbox.google.com/
and try searches there.