A blog post about
15 Free SEO Tools to check keyword density
http://www.dailyseoblog.com/2008/06/15-free-seo-tools-to-check-keyword-density/
June 8, 2008
June 3, 2008
Robots Exclusion Protocol.
Here is the google blog post on “Improving on Robots Exclusion Protocol”
http://googlewebmastercentral.blogspot.com/2008/06/improving-on-robots-exclusion-protocol.html
