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My answer is a definete no.
I believe he intends to target a different part of a market that he is already established in, using a different affiliate programme. His query was about any problems with similarities in design.
You case, Zap, appears to involve issues of copyright infringement and spamming - which don't effect C1.
Scott
As far as content goes, navigation by "sprocket" type is the same. The real difference is in keywords and the affiliate.
Each site would look somewhat different, have similiar navigation, somewhat similiar content (in that it's still about sprockets), different keywords and different affiliates.