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I can see why a penalty would transfer a penalty to a new domain, if in fact it's a new domain. It's a fresh domain with 0 history and 0 backlinks.
But, if the penalized domain was 301'd to an existing, already established website, that's the kind of situation where I don't see why it would make sense to transfer the penalty. That's where you can hurt competitors.
I can see why a penalty would transfer a penalty to a new domain, if in fact it's a new domain. It's a fresh domain with 0 history and 0 backlinks.
But, if the penalized domain was 301'd to an existing, already established website, that's the kind of situation where I don't see why it would make sense to transfer the penalty. That's where you can hurt competitors.