"In the beginning, Google was all about indexing Web pages, then
it grew to news, blogs and video.
"Now Google is embarking on, perhaps, its most ambitious
indexing venture yet: indexing countless billions of lines of code
as part of the new Google Code Search.
"Google Code Search on Google Labs gives users a place to search
for publicly accessible source code. It looks like a regular Google
Search page but instead of searching Web pages, it's going to
search billions of lines of code..."