More often that not, those with multiple copies are themselves the spammers. Check out the links at the top of this link Beware of Fake files in search results for which types of organisations are responsible for this spamming. They are sponsored to do so. They run large networks of computers for producing & spreading of the spam. Spam comes in different forms, viruses, fake or corrupt files, porn spam. And also those those give results in searches but are non downloadable. The latter ones tend to slow p2p programs down because they keep trying to download them periodically. So best to delete them off the download list as soon as possible.

BTW would you vote for a politician who supports this behaviour? The illegal spreading of viruses? It's illegal in most countries including the USA. But some politicians actually secretly support it & are sponsored by such organisations mentioned. The breaking of National & international laws do not seem to matter to some politicians.