This is more of a personal preference question than a right/wrong question...
I have an "about us" page that is filled with schema.org microdata. We have name/address/phone/etc... on our front page, as well.
Is there any point including that microdata on the front page? It seems like it would be better for search engines to only have 1 page to point to. At the same time, though, it seems like 1 page should be the front page.