nmjudy - 4:46 pm on Nov 24, 2008 (gmt 0)

Webmaster Tools is showing me pages with duplicate titles with URLS that look like this:

www.example.com/directory/
www.example.com/directory/index.html?PHPSESSID=d1df7a5b58659817c692854ed9c14ed6ý

My site is entirely static, with the exception of one directory that uses Postnuke. That section of the website has been there for several years and never caused a problem. From what I can see, Postnuke does not generate URL strings like this.

In the past, I've had a problem with paid membership websites framing my site for their content. All my pages have the "break out of frames" javascript code in them.

Could this PHPSESSID string be generated from another website? If so, could Google be indexing both versions of the page and dropping my pages for duplicate content? Obviously, Webmaster Tools sees the pages as 2 different pages with duplicate titles.

I'm one of the people whining over lost rankings from Nov 2 and still trying to figure out what caused it. In October, I implemented a sitewide change from pointing pages from /directory/index.html to /directory/ .

Is this just another buggy Webmaster Tools thing or can I do a workaround in mod rewrite to combine these kind of pages too?