"the staff" is a singular unit, therefore you would properly say the staff "is" watching you. If he said "staff members" it would be are. But in this case, he's right. The word staff implies they act together, which means it is a unit.
"the staff" is always plural, as the word "staff" is always used in a plural sense. also since it is being used as a singular noun, it implies that we are being watch by a magic staff, instead of the forum staff.
Hmm, this is a tough one. On the one hand, it's certainly possible to infer that the staff is acting as a single unit, but it's equally possible to infer that the staff are nothing more than individuals who happen to share some arbitrary trait.
Comments on Profile Post by theteremaster