If you click the blue Discussion Groups link in the top menu, you will see a list of regional groups that you can join to discuss anything about your treatment with people in your local area.
You can join as many groups as you like, you just click the Join Group button on the right of the group name, and you can then start posting and replying-to messages.
Once you click the name of the group, you will be taken to the homepage for that group. There are links at the bottom of the page for the Forum and to look at the list of current Members.
Click Forum to read all the latest discussions, just click the name of a topic to read and reply, or fill in the boxes at the bottom to start a new Topic off.