If you havent noticed yet. You have the option of approving all comments made within your mumm. I hear the death screams of the Mummville trolls.
Go into your Privacy Settings and right on top is the Spear of Troll Slaying. Select option "YES" and be rid of dumbass, off topic comments from losers that only shovel out shit and not needed wisdom.
Also while approving comments. You have the option of blocking right then and there. No worries.
LOVE IT!!!