I hate to sound like that guy, but I don't think whoever that deleted such posts (excluding those plagiarized ones) would show up to clarify things.
Hmm... perhaps you *are* that guy after all?
Omg yes please, I'd like to know too.
Another one I got, seriously this is getting annoying.
As was discussed in this thread previously, what one admin/mod will delete isn't necessarily what another admin/mod would delete. So there is no uniformity, much less conformity.