The How Search Works website gives us an inside look at how Google continuously works on improving the results of their search engine.
I have looked at the How Search Works site before. But a recent video (below) from Google's Matt Cutts, prompted me to revisit, as he revealed some interesting nuggets.
Matt Cutts is the head of Google’s Webspam team. So it seems appropriate that he would be most excited about the Fighting Spam page. Here are a couple of interesting points he touches on.
1. Quality Raters: People, not robots, determine which changes are implemented
(1:48) When talking about search algorithms, he also mentions "quality raters". These are folks who look at results pages side-by-side, and rate them based on the usefulness of the results for a given search.
2. The spam carousel: See the types of web spam being removed daily
(4:02) "...you get to see spam right after we've removed it... It's literally like you can watch over our shoulder as we removing spam so you get a chance to see the sorta stuff that we have to deal with everyday."
It's a fascinating behind the scenes look at how Google Search continues to evolve. If you are a Web marketer, I highly recommend checking it out.
Watch more of Matt's videos: Google Webmasters Help channel on YouTube