Your group's subdomain is the one you chose to access your account when you signed up with investapp. If you don't remember, it's probably in your welcome email.
Members are people you add to your Investapp account. They do not have to pay. You have already paid for them.
All accounts are hosted on a redundant disk array and backed up nightly.
Yes. You retain all copyright and ownership of your group's data, as well. Please see our Terms of Service and Privacy Policy for more information.
No. While all your comments are not viewable by non-members, they are viewable by your members.
Contact us at scott@investapp.com to work something out.