I don't know that it would matter. Propaganda, astroturfing and shilling campaigns are old news, and were old long before computer networks. I don't think there

I don't know that it would matter. Propaganda, astroturfing and shilling campaigns are old news, and were old long before computer networks. I don't think there's a practical way of preventing such things. For detection, fingerprinting would probably work for individual training sets or implementations, but with an advanced adversary (especially if they're politically rather than profit motivated), I'm not confident you could even whack-a-mole well.