Forum manager, for short

ADMIN

This person keeps online discussions running smoothly and enforces the rules behind the scenes.

This clue is looking for a short term for someone who manages an online forum. "Admin" is the common abbreviation for "administrator," the person who oversees discussions, enforces rules, and keeps things running smoothly. The "for short" hint signals that the answer is a truncated or informal version of the full word. It’s a straightforward definition with no hidden wordplay—just a direct reference to internet culture.