- Diaper Lover
When you give rep, whether + or -, you have the option to give zero: I just tried it out. While it seems like a good idea to be able to say I approve/disapprove of a post but that it is not worth a full point, there is a possible bad use of it: to spam zero rep around so you can keep repping one particular person. Thus it could be used as a utility to facilitate flame wars. I don't see that it has much other purpose.