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bwnbwn - 5:48 pm on Oct 22, 2012 (gmt 0)
Having your sites connected isn't that big of a deal. I have all our sites connected in all the above with no ill effects. It has more to do with the same content remashed on different sites probably.
Content has to be unique not reformatted with the same or near same content.
Google is making it were the day of a single webman/company running 20 webistes it getting much harder and way more expensive.