In your control panel, go to Forums > Specific Forums. Click Forum Details link for the forum in which you wish to enable or disable attachments. Click on the “Posting Settings” tab. Under “Attachments,” check or uncheck “Allow Attachments” and then change the settings, if applicable. Click on “Update Settings.”
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .