Keith Hogan – Ask.com

• Less than 35% of servers have a robots.txt file
• Most are copied from one found online
• Typical 23 character (100 is about the max)
• Format is not well understood
• May change to xml format for better control in the near future
• Ask: can find info about a crawler on site in the about page.

Eytan Seidman – MSN Live Search

• Used example www.hilton.com/robots.txt (tells them not to use it during the day… funny)

Dan Crow – Google

• Also need to focus on robots exlusion – robots.txt + robots meta tags
• Exclusion Protocol: tells search engines what not to index
• Comparted to sitemaps which tells search engines what to crawl
• Search engines have a lot of differences between them
• There is interest to standardize protocol for all search engines

Sean Suchter – Yahoo

• Yahoo slurp is the web crawling robot
• Yahoo! Slurp = user-agent identifier
• Supports all standard robots.txt commands (robotstxt.org
• Custom
• • Crawl delay
  • Sitemap – specify location
  • Wildcards – specify patterns of urls to disallow/allow
  • Custom meta extensions – NOODP and NOYDIR – do not use Yahoo directory titles
• Please only address yahoo robot with that section in .txt file
• Currently supports crawl-delay
• • Often misused
• Microformats.org/wiki/robots-exclusion
• • Demark sections of html you don’t want robots to use for matching
  • Used to demark useless template text, ad text, etc.. irrelevant traffic
• Historically – to identify what pages to not show in search results
• But… there is more beyond those (css, images, inline text, iframes), do we need a mechanism to exclude that in certain respects?

Danny Sullivan – Host

• Check out webmasterworld’s robots.txt file – has lots of notes
• Wonders if robots.txt in XML format to make it easier
• • Maybe combine the sitemap and robots to one file – check and prevent in one shot

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