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Hi SEOMoz I have a listings site. In a part of the page, I have 3 comboboxes, for state, county and city. On the change event, the javascript redirects the user to the page of the selected location. Parameters are passed via GET, and my URL is rewrited via htaccess. Example: http:///www.site.com/state/county/city.html The problem is, there is A LOT(more than 10k) of 404 errors. It is happenning because the crawler is trying to index the pages, sometimes WITHOUT a parameter, like http:///www.site.com/state//city.html I don't know how to stop it, and I don't wanna remove it, once it's very clicked by the users. What should I do?