The Report Abuse module features a two-step process to ensure that the use of offensive language or refusal to meet transaction obligations (e.g.: constantly declining to ship purchased items) is dealt with as quickly as possible. First, leave negative feedback, to warn other users to avoid a particular seller/buyer. Second, inform the admin by sending a message via the Report Abuse button.
For reporting a user go to a listing and select Report Abuse:
Next, complete the form indicating the reasons:
The message will be displayed in the sender's Inbox (Home -> Members Area -> Messages -> Sent):
and in the Admin Interface (Tools -> Messaging):