Will indicate that a member who's photo, video or blog post you are looking at is online or not.
Will be the indicator for featured members on the front page and in the member pages to let others know if they are are online and available for support or chat.
In order to chate with another member, look down in the right bottom corner of the network for the chat bar. Just click it and it will open across the bottom of the screen.
Hope this helps. Good luck Surveyors!
Thoughts