Only a few reasons I am rude to other users
1. When they send me a messege offering 1/2 what something is worth without seeing it.
2. When I am browsing and I see a part that is not listed correct, I will send them a messege to tell them thats not what they have, they always rude back so I send another one being rude back. Example Search matty box on rj ... $825.00 for someone to find out when they buy it, its a digital tester not a matty box can be purchased brand new for $149.00 showed the guy the link and everything was rude back.
3. When I am looking to buy something and may offer what I want to pay (never low ball someone by offering them pennies for it) but I will offer less more often then not, they tell me know I'll keep it before I sell it for that, I just say well then just keep it.