It means that that user is idle. The half moon comes up after the user does not interact with Facebook for a consecutive ten minutes.
The crescent moon symbol I believe you are referring to means that the user is "idle." Meaning that the user is logged on but hasn't been using the application for a period of time.
What half moon symbol? Where is it?
It means that facebook chat line has been opened and is idle after 10 minutes.
it means there idl(away etc..)
The blue dot means online and the half moon means idle. After a certain amount of time online without activity your online dot will turn into a half moon
no you have to be 562 years old to get this!sorry to dissapiont all you idiots!
I had sex with a man once.
The little moon on Facebook signifies that you have activated the "Dark Mode" feature, which changes the background of the app to a darker color scheme. It is an option for users who prefer a darker interface for reduced eye strain or aesthetic purposes.
don't do anything on facebook for about ten minutes and a little moon will appear to your friend when they look at you on chat. the moon means you haven't done anything on facebook for a while even though you are still online. it also means idle or away
it means that the user put themselves offline
it means they're idle (away etc.) like on msn when they have a clock its the same thing for facebook chat except its a moon, however you cant choose to be idle you only have the option to be online or offline and if your online and you havent done anything for a while on facebook chat it automatically puts you to idle seeing how your online but not doing anything, hope that answered your question!
Someone is on facebook but chooses to go offline. All messages sent to this person will go to their inbox. To go offline, click the chat widget in the lower right hand corner of your browser. When it pops up, move your cursor up to "Settings" and click on it. Click "Go Offline."
Not be logged into facebook or not be active for ten minutes then it shows a moon
1 Half of the moon is blue