engine - 8:37 am on Oct 28, 2010 (gmt 0)
Are you talking landing pages, or general content? There's a difference in that the landing pages are to help lead people to the specific service and possibly to convert the prospect there and then. Once people have arrived at your site if they find repetition it may turn people off from converting. Informational duplicate content is not so good.
If they are landing pages, start by breaking them down into sections that flow naturaly together.