I healthy percentage of my inquiries are people asking for reduced rates. Frequently they're asking for half or less than half of the going rate. It is getting irritating writing polite responses back to these people, and airbnb will hassle me if I decline them. I'd like an option for declining that says "guest is asking for rate reductions" or something to that effect.
I understand that negotiating will happen and some hosts would be happy to receive inquiries such as this and negotiate. My feeling is that the guests contacting me are probably hammering a dozen or more hosts in my area for discounts, and it's just annoying. If airbnb has a guest that is frequently declined for asking for discounts they could give them a warning or something.