We actually do have realtime chat (AJAX based chat) we were testing some time ago but it never caught on. You have to realize that PGD members come from all around the world so it is quite hard to catch up with most of them due to time difference.
Anywhay if you wanna try it go to http://www.pascalgamedevelopment.com/chat/?lang=en but I'm afraid that for most of the time you will be there alone.