This user should not only receive negative trust rating but should also be banned.

I don't even think he'll be banned for spamming: posting the same thing after you deleted it could be considered a bump.

Copy-pasting content is prohibited in this forum, right?

The bannable offense is plagiarism, which is taking the content of others and passing it of as yours.

I've seen this many times: apparently the concept of plagiarism is still confusing. At least this puts xLays on the safe side Wink

What if we tag stake.com, their manager and the participants for spamming?

That would be considered Trust abuse.