I have set up a forum for phocoa. Previously we were using Google groups, but I think the forum will make it easier for people to interact. Plus, this forum has a lot of great features.
For instance, it supports RSS so this link will keep you up-to-date on all the latest phocoa news:
http://phocoa.lefora.com/api/category/30203/?format=atom
I will leave the Google Groups up for a bit, too, for now.
Enjoy!