If a member of your site has repeatedly sent you messages that contain spam or offensive language and you no longer wish to communicate with them, then it may be time to block. Blocking another member prevents his or her messages from showing up in your in-box. In many cases, it is better to block a member that is flaming you in private messages than to respond, as internet trolls are fueled by your replies and anger.
Open the message sent by the member
Underneath their user name, select "block user."
Unblock A Member
In many cases, you may decide that the user no longer deserves to be blocked, and you want to continue receiving messages from them. Unblocking members is simple.
Click on "my profile" on the right hand side of the top nav bar, and select the "blocked users" tab.
Find the name of the member you want to unblock and select "unblock."