Hi Guys
Im trying to get to the bottom of an issue i have, I have a site and have seen Google visit (example) mysite.com/?&site=elvis
I got my web developer to check everything and could not find that URL string
went into my webmaster tools and now Google is seeing that as a duplicate page to my site which has passed PR , it may be nothing but why would this be picked up, the string will not report a 404 error in fact i tried that on many sites and none do report a 404
is this common, is it somthing i should be concerned about and more importantly how has a URL been created
Thanks in advance