Q: How can a deal be rated negative?

Seriously, a negative number is only theoretical in nature. I believe it should be impossible for a deal to go into the negatives. You hit zero and that's it! Seems silly that anything can be thumbed below zero. Also I move that we remove thumbs and replace the rating system with hotdogs. "I rate that deal 5 hotdogs...or 3 hotdogs!" You get the picture. Hotdogs are so much more friendlier than thumbs.