We use Agorapulse to automatically pull all of our ad comments into our social media management tool. Agorapulse allows us to setup keyword rules so if someone uses keywords like "scam, ripoff, etc", we can auto-hide or delete their comment.
Any remaining ad comments are managed by a 20 hr/wk college intern on my team but we are in the process of hiring a full-time person to increase our coverage because negative ad comments can kill ad performance.
