There are two facilities, and you can participate in either or both. The first facility is this website - where you can have your contact details listed on the Where Are You ? webpage.
You must send me an email (the email address is shown on the Contact Page) if you want to do this, with the relevant information, as I will not put this data up on the Web without your specific request for me to so do. You will note that I have deliberately "corrupted" the email addresses to frustrate the email harvesters if you are worried about identity theft or spammers getting hold of the data.
Secondly, you can participate in the MCnetwork forum, and this is basically a discussion conference, a sort of bulletin board where you can send messages across the network to all registered subscribers - or just lurk in the background, and read what others are saying or doing. You will be able to
have the messages sent to you automatically as single messages, as email .... or
receive a Daily Bulletin or Digest of each day's correspondence, again by email ...... or
do what others do - just read the messages at your leisure, on the internet with a browser - this saves all that mail ending up in your in tray, and it's dead easy to set up and participate this way ....