After looking on the site, i only see two ways to communicate; by forums and profiles. As said before, forums aren't that good because you cant have a conversation with some particular people about anyhting. Profiles, you can, but it can be annoying when you need help from a Mod or Admin, and they don't check there profile. I thought of an idea where you got to their profile, click on a link which will open a box and you send them a private message which will pop straight up on their screen, if they are online. This may be good if you want to talk to someone - urgent or not. of course you could disable it, like the other comment feature, if you don't want people to contact you.
Volcanboy, please use better titles from now on. Maybe put the word suggestion in it or at least take out the "PLEASE READ". People are thinking your suggestions are actually put in place so then they make threads asking why. Just from now on, make less moddy/adminy titles.
A PM system has been suggested several times. It may be implemented at some point. Until then, there are several instant messaging programs out there for free. Almost all of us mods have one of them, so if you need to contact a mod quickly send them an instant message if you see that they are on. This is the easiest way to get ahold of one of us.