Single Status Update
Now that the forums are somewhat stable we are adding a few more features with plenty more to come.
1st is the status update you see here. You can update your status in a number of places if you are a member and it will show up on various walls. the +Create link at the top is probably the easiest. Check your profile after you do a status update or two.
2nd is the @mention feature. When you want another member to be notified about your post just typ the @ symbol followed by a "lowercase letter or two". Then when the names popup either select or keep typing until you narrow down the name to select.
We are also able to add additional content in the header area, sidebar area as well as the footer. I'm guessing you noticed. In any case there is more to come. Slowly but surely.