I’d like to suggest a feature that I feel should be added to the site. Myself, and I’m sure many other sellers here, have experienced at least a couple bad buyers in their time selling. My latest instance, I took a gig from a client I had worked with months ago who turned out to be pushy and went against his word. I had forgotten that I had a similar experience with this buyer the last time I worked with him.
So, I’d like to suggest adding a “Red Flag” feature within the message/contact section. Similar to the way you can STAR a certain buyer, but if you Red Flag a buyer and they happen to come back months later, a seller would be able to say to themselves “Wait, I’ve had a bad experience with this buyer, I do not want to work with him/her again”.