Just type a message in the bottom box and then click on the little arrow thing next to it~~usually no on is there so just post a message, a thought or a whatever that you would like to share with everyone~~~if you write it, they will read it~~~
Also you can change your name to your screen name by clicking on the name they assign to you (plus pick a picture). I suggest if you want to chat, that you invite the person you see online by PM and go wait there for them to join. We may have more participation on weekends.