Google Webmaster tools has an error for an increase in 'not found errors' on my site, and I see approximately 1700 'Not Found Errors over the past 2 months. All of them are for a url that is formatted like: http://mydomain.com/click.php?c%3EdHm7fnGkc3Smdz6kc31%3E'dmjdlgsbve%3E2'lfzxpset%3EQfbs'sbol%3E2'f%3Evt%3Cvt%3C79%3C2%3C2%3C54528243%3Cgmbnjohpspbe%3C2%3C6224'vsm%3Eiuuq%264B%263G%263Gxxx%2Fopdmjdlz%2Fdpn%263G'gffe%3Eopqbz'qsjdf%3E'tbq%3E%3A84%3A9g54e662db639%3A28eeb2cc8bb8e9'zbsht%3Exxx%2Fopdmjdlz%2Fdpn Code (markup): Google says these are linked from: http://mydomain.com/index.php?Keywords=Pear&search_type=related2&cat2=Lemon+Cake&r=c%3EdHm7fnGkc3Smdz6kc31%3E'f%3Evt%3Cvt%3C79%3C2%3C2%3C27748763%3Ctuzmf2%60dvtupn/dtt%3C3%3Cjoufsdptnpt%60bggjmjbuf%603%60e3s%60efsq%3Cgmbnjohpspbe%3Cgmbnjohpspbe%3C656178%3C6224%3Cdmfbo%3Cmjtujoht%3Czbipp%3C'jqvb%60je%3E:84:9g54e662db639:28eeb2cc8bb8e9'enybsht%3Eg4dc139e6673d:812b:b::d8e34:9fe9&rd=1 Code (markup): When I browse to the url Google says these are linked from (both using my browser, and the fetch by Google tool), I don't see any links on the page to click.php. Also, click.php does not even exist on my server. Also, when I look through my server logs, I do not see any of the index.php? urls this says they are accessed from. What am I missing here? Is the link getting encoded in the url or something? How can I fix this? I would REALLY appreciate some help in figuring this out.