Google Code Search - Indexing Source Code Inside Zip Files

I was playing with Google Code Search (search engine for public source code) and I noticed it had indexed some code I released a while back.

I knew the google bot was indexing public CVS and SVN repositories...
But the interesting thing is that I never checked this code into any public repository.  All I did was place a zip file on my webserver and link to it from my homepage.

I searched around a little and found this explaining what it does:

"The two ways that source code lives on the Internet is in archives, things like Zip files, gzip, etc. And then in software-control repositories like SourceForge.net, Google's code hosting, and other places," Google product manager Tom Stocky told internetnews.com.

"We'll be crawling all of that."

Google isn't just going to index the Zip archive files. They're actually going to open up the files and index all the individual files within in.

This is pretty cool.  By doing a Google Code Search you can see the full contents of the zipped source files, as indexed by Google.