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Hi there! I've been working on http://duproprio.com for a couple of years now. In the early stages of the website, we've put into place a subdomain wildcard, that allowed us to create urls like this on the fly : http://{some-city}.duproprio.com This brought us instantly a lot of success in terms of traffic due to the cities being great search keywords. But now, business has grown, and as we all know, duplicate content is the devil so I've been playing with the idea of killing (redirecting) all those urls to their equivalent on the root domain. http://some-city.duproprio.com/some-listing-1234 would redirect to equivalent page at : http://duproprio.com/some-listing-1234 Even if my redirections are 301 permanent, there will be some juice lost for each link redirected that are actually pointing to my old subdomains This would also imply to redirect http://www.duproprio.com to http://duproprio.com. Which is probably the part I'm most anxious about since the incoming links are almost 50/50 between those 2 subdomains... Bringing everything back into a single subdomain is the thing to do in order to get all my seo juice together, this part is obvious... But what can I do to make sure that I don't end up actually losing traffic instead of gaining authority? Can you help me get the confidence I need to make this "move" without risking to lose tons of traffic? Thanks a big lot!