Originally Posted by
lin821
BTW, when the "green light" is on, it says you've logged in and are on FT for the time being. When one logs out, the light turns red. Nothing punitive is attached to the "green/red status light."

Actually, green means the poster is logged on and active on FT; gray means that poster is logged off. Red means you're logged on but have set yourself as "invisible," and thus other members will see you as gray even when you're logged on and actively browsing/posting on FlyerTalk. You'll never see anyone else with red light; you'll only ever see yourself with a red light, and that's only if you've turned yourself invisible.
You can set whether you want to remain visible or invisible in the
Edit Options menu.
If you hover your mouse cursor over the icons, they'll tell you what they mean.