I think that people who are being concerned in a support topic should be allowed to post in there. For example.
Username: Player1212 was swearing. Look at this proof
F-Mod: Thanks for the report !
Player1212: Sorry, I see my mistake and would like to take a second chance.
F-Mod: Hello, If you would like to make a ban appeal, go to this site.
Or a bug report here; a beta tester should be allowed to respond saying that they forwarded the bug. Or a user asking a question about being mod, a mod should be allowed to answer the question.