You are now able to 'reply all' in the private messaging system so that you can have group conversations easily.
You simply click "Reply To All" and it will basically create a new PM, quoting the contents of the one you received - and add all recipients as the recipients of the new PM. You can add/remove people from there if you wish, and edit the contents of the PM.
This should help with Group Buying, too. You can share personal details you can't otherwise share on the site in this system with your groups, and hold private conversations this way.
We are working on additional ways to aide in the Group Buying process as well.
Oh, and remember, you need a post count of 10 to use the private messaging system. This is part of our effort to keep broker spam away from our valued members.
Private messaging system as well as signatures have been turned OFF for members with less than 10 posts. This is to help combat brokers signing up and messaging members off the bat, which we have received complaints on, and signature spammers.