We use dots to let you know when someone is currently online.
So, if you see a green dot next to a member's name on the home page, this means it's a great time to send them a message.
If you spot a pink dot beside someone's username in your inbox, they're online now or have been recently, so may be available for a chat.
Please remember that online times are approximate, and the other person may show as online for a little while after they've left their computer, or they may have a tab open while they're busy doing other things. Always show patience and kindness if someone doesn't respond to you right away.