Google’s Matt Cutts, the man responsible for helping bring search engine communication with webmasters, amongst other things, produced an 8 minute video on how Google search works. He briefly goes through how Google worked in the past and works now, when it comes to crawling, indexing and ranking. Matt said the video describes how “Google crawls, indexes, and ranks web documents.”
Here is the video:
Here is the transcript:
Forum discussion at Google+.