Bear in mind I am not familiar with media wiki but this sounds like a misconfiguration of the web app. As you don't provide enough details or even partial stat

Bear in mind I am not familiar with media wiki but this sounds like a misconfiguration of the web app. As you don't provide enough details or even partial statistics about your visitors it's hard to analyse the situation with you. > Try asking around in #seo on irc.freenode.net