The real estate world in the Web is often made by listings published from a real estate agent on several real estate portals at the same time.
Often it happens that the real estate agent doesn't know where this listing has been really published and he could find the listing on unknown portal. This because one portal talks with another one exchanging content with themselves.
Im following a portal dedicated to rentals of home (home page PR0). Until now I haven't seen any progress in Serp nevertheless some optimizations I have already done, so I'm thinking about its content. Listings of my portal are taken from another "master" portal (home page PR2) and they are also published on a third real estate portal (home page PR2). These two ones are better positioned in Serp.
The content of the listings is the same and also categories are the same, but pages of this websites are different in other aspects.
Question is: could the portal that i'm following be considered as made by duplicated content, so Google is not giving to it good positions in Serp?
Thanks and ciao