Hi,
Sorry for missing the original suggestion, but certainly sounds like an interesting community. We've just added it at:
http://www.medhelp.org/forums/show/300
MedHelp
I also agree that a forum just for agoraphobics would be worth investigating. I know there are many out there that come here for help and support, myself being one. I do not see many posts on this topic. Sorry to hear about your friend, I have been there too!! I was housebound for many years, then was able to live a somewhat life, going out, traveling, shopping, parties..etc. I'm recently in a set back and feel stuck at square one which is hard for me to grasp at this time. I know baby steps must be taken but I want to take leaps and bounds and be where I was before the setback. I think I'm in denial and too stubborn to admit that I'm back in the same place I swore I never wanted to be.