If you're getting unwanted messages through Facebook's Messenger chat
system, there's an easy fix. Load your Facebook page, then take a look
at the
Messenger list on the right side. If you don't see it, click
where it says Chat in
the
bottom right corner of the screen.
Click the gear at the bottom of the list, then click the "Advanced
Settings" link.
From there, you can turn off chat for everyone or choose
which friends can and
can't see when you're online. It's a low-effort
way to politely keep people from
bothering you.