We started out with city specific websites such as DelhiWeddingPlanners.com, MumbaiWeddingPlaner.com, etc. When the network began to expand, we decided to have an umbrella website, BollywoodShaadis.com. From this parent website, a visitor can navigate to tany of our child (i.e., city specific) websites.
We offer a lot of editorial content to the visitors of our websites. This content is fed to the parent website as well child websites from one common server. Each city specific website also shows the vendor data from its respective city.
Question: Are the search engines seeing our websites as serving duplicate content, or are they smart enough to know that each one is a related website and has a purpose? Do we need to tell the search engines which is our flagship website and which are subsidiary sites? If so, how do we tell them? The traffic to our parent website, BollywoodShaadis.com, is growing exponentially every month, mainly through our Facebook efforts. We want to attract the traffic from search engines, too.