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.
Below is a sample of the emails you can expect to receive when signed up to Ashtanga Yoga.
You are receiving this e-mail, because you or someone else has entered this e-mail address in one of our "Subscribe to Newsletter" forms.
Click on the link below to continue the process. If you cannot click on the link, copy it to your browsers address bar (Internet Explorer, Google Chrome, Firefox...).
The link automatically expires after 24 hours. If you have not filled out the form, please ignore this e-mail.