Hi all, From yahoo site explorer, I see that yahoo has been appending a weird session variable of its own to all our urls and therefore indexing the same content multiple times with a new session in the url. So the webpage count is increasing constantly by 1-200 pages in the index at every re-index by yahoo, although no new pages have actually been added. The urls appear in a double type of brackets in the yahoo index like this: www.mydomain.com/(S(djc4ih45uvt2xb2aswlnicm4)) www.mydomain.com/(S(vs4vwr45ttlffbm4ift5xh45))/contact.aspx etc. I don't understand where this extra variable in brackets is coming from as I am not using any session ids, tracking ids etc. for this site and the pages are not dynamically generated -they are static pages although using aspx filetype. Google has indexed the site correctly without these sessions in the urls so the problem is only occurring in yahoo. I have added this code to robots.txt to see if it may work: User-Agent: Yahoo! Slurp Disallow: /*?sessionid Disallow: /*))/ Disallow: /*)) Disallow: /*(S( Disallow: /*? If anyone could give any other advice I'd really appreciate it as am not sure what else to try! Thanks all!