I have created a page that lists a number of my clients with links to their sites and descriptions about the site. Each client (on their homepage) has the link to a copy of this page that I have placed on their domain.
I am a little worried about submitting the link page for each site, considering it has the same content.
It really depends on how close they are to one another content wise. It really doesn't take much to make two pages appear different to a spider. Regardless of what some of the se's say, it's my experience, only 5 quality non-stop words will make a page appear different to all the majors.
You can also do somethings in the html such as one page use absolute addressing and the other relative - one page use alt tags in your images - sprinkle in a little css or some extra font tags, or use a double nbsp; separated br's instead of that p tag. The goal is to make the pages about 1k different from each other in pure disk size.