This is a bit technical (and nerdy) but I thought it was very interesting.
Follow this link to see the robots.txt file for whitehouse.gov from yesterday and then a resived version for today. Dramatic difference, I suppose change may really be on the way.
FYI, the robots.txt file is a special file included in website (or on the web servers) that tells search engines (such as Google) what to include and not include (“ignore”) when they crawl the site and see what people can find in their searches (include in their indexes).