This site did not show evidence of storing passwords in plaintext.
This site does allow secured connections (https)
This site did show a clear way to unsubscribe from their emails
This site does verify your email address.
Membership Emails
Below is a sample of the emails you can expect to receive when signed up to meetingking.
Yesterday you signed up for a MeetingKing account, but you have not confirmed yet.
To complete the creation of your MeetingKing account, please confirm at: https://accounts.meetingking.com/auth/verification?confirmation_token=3bNhg2yNs1eEzzHpeHyb