It is easy to add new users to your account so they can work with you. In fact, it is automatic when you share an image with a previously unknown user. This makes things really easy for everyone. All the other user needs is an email address, name, and password, no full registration needed.
Mark W. Kaelin has been writing and editing stories about the information technology industry, software, hardware, gaming, finance, accounting, and technology geekdom for more than 30 years.