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Gosh, there is a lot going on here so it's kind of tricky to give an answer to this without seeing the domains and doing some analysis but I can give you some general advice. First, check this post out, it's old but relevant: http://www.seomoz.org/blog/seo-guide-how-to-properly-move-domains After that, the big one here is are you trying to do something that is manipulative? If not, as long as you redirect the sites to the relevant content rather than just folding them in, you should be okay. Done right, if the sites themselves are clean, then nothing bad should happen but again I am just shooting from the hip here with no links. To play devils advocate - if they have no traffic, is there much benefit to the redirection? Do they have valuable links? Content etc? Will you move the content and then do individual redirects or are they just old doorway pages that have really stopped working now? Worst case, you could always kill the redirects if it causes you a problem and you would bounce back but really, this all depends on the status of the sites themselves and whether any other funny business has been done to the main site or these other sites. So.... impossible to give a 100% answer here without more details but I hope this helps. Marcus