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 aimagery.
Hi ,
You have successfully completed user registration on Aerial Imagery.
Please visit 'My Account' page to edit your account details and create your user profile on Aerial Imagery.
Thank You!