What is the green dot on some of the answers here?

The green dot usually means the person is online now.

It signals that the person is currently logged in to their account. You can toggle it off in account options, if you don't want people to know.

Shows they're online but most turn it off.

beside people's username ? means they are on line

it means SW has had a report filed on that person and they are close to being suspended...it just means they are showing as online