Might "Active Now" be appropriate as an item in the drop-down menu for "Muggers"?

It would be redundant as the avatars of those active are already displayed at the top of the page.  

Use the "Feedback" tab along the left if the page for suggestions.

It really depends on how much use it would get. I don't think a whole lot of people search for who is online, so it might be a useless link taking up prime real estate. If there's real interest, I can add it, but it's also accessible by using the Muggers search option. 

Isnt that what we already have with the green dot that get added to the avatar picture of those who are online. Maker it easy to see.