Unfortunately, this site requires personal information personal information in order to register, gender, date of birth, country, and zip code. The mailing list includes advertising unless they are paid $60/year. There are better choices than this one for creating a mailing list.
Chuck Tribolet explains the issue and the solution:
The ba_diving list is an e-mail list for discussing Northern California ("Bay Area") diving. It was running on a list server at best.com. Best.com was bought by verio.com. The list server at best had a hard dive crash and there was no backup (DUH). That meant there was no more list server, and even the list of subscribers was lost.
To fill the void, I created a new group, ba_diving@egroups.com. Egroups is a free listserver, run by Yahoo, with a decent user interface. For now, we have to put up with a little advertising, but we can make that go away for $60/year. We are taking up a collection, and have pledges for $40 the first night, so the advertising will be gone shortly.
I was able to send e-mails about this directly to everyone who had posted this year (I'm a pack rat and had saved all the posts), but we have no way of contacting the lurkers (those who read and don't post) directly. So if you are a lurker, you need to sign up again. Just go to http://www.egroups.com/group/ba_diving.
blurb@alacosta.org