Is this a centralized or decentralized system? I am not allowed to give a negative tag to people who I don't trust? Who do I tag instead because of this spammer, the manager that enables this user to defraud the company that is funding the signature campaign?
If you do not trust someone,
Go to your profile, and then click on trust >> Trust settings >> Put a ~ and their username. In this case, it would be ~Bitcoin Smith and update it. If you trust some, do the same process, but without a ~. That's how you do it.
You should read the beginner's guide, which was mentioned by Bitcoin Smith earlier.