SERP = Search Engine Result Page

serp

Google’s robots.txt disallow all bots from crawling “Google.com/search….”, but let’s see what Googlebot did. It indexed about 40,000 Google’s SERPs. These pages range from e^(pi*i)+1 to “kentucky friend chicken”. The Googlebot is also crawling some 3000 Google Picasa Web Albums’ URLs, which is also disallowed by the robots.txt. (Not sure what “Allow: /$” means to Googlebot though.)

read more about robots.txt