If I missed this, please let me know, else I would like to request a link back to meta.stackoverflow.com from the chat rooms. I think having the standard footer located here now would suffice, perhaps slightly modded since it is a different site. However, just like I can go to SU, Meta, SO, ServerFault from the footer in any of those sites, I think you should be able to leave the chat section without having to retype in a URL.
I was here when I made this observation (chat room home page I guess?). I had hit the 'HOME" link from a chat room, then began to look for the link back to meta at that point. The link pointed out in the answer below isn't there, but good to know it does exists somewhere.