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Have you read this YouMoz about white-hat link building in the gambling industry? http://moz.com/blog/case-study-whitehat-link-building-in-the-gambling-industry Edit: Just realized the original question is from 2011, so I don't imagine the OP had a time machine to see that post.

Thank you for your comforting reply, Andy. The institutional site is hosted on the same server, though we bought an extra IP for it from our hosting provider, so I guess there's no problem there. Well, let's hope we win this dance-contest