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 DomainHub.
You have received this mail because you have subscribed to domainhub.com, either by our domain for sale page or by our user registration page. You can always unsubscribe from our mailing list, by clicking on the link unsubscribe link below Domain Hub LLC, Location: 913 N Market Street, Suite 200, Wilmington, DE 19801, Phone: (302) 502-0255, Fax: (302) 502-0256
email@example.com http://domainhub.com Cape Town: +27-72-610-7500 (cell) Cape Town +27 21-553-0639 (office) USA +1-302-502-0255 HubDomain