Using the Zinc HTTP library, get a photo from an email address through gravatar http://www.gravatar.com/avatar/. Convert it into a morph and open it in Pharo. Using email@example.com so that you are sure to get a .jpg. The result should look like situation shown in the figure below.
The path to the photo associated to an email is composed as follows: http://www.gravatar.com/avatar/(MD5 email-based hex).jpg
To build an MD5 cypher from the email use MD5 hashMessage: .Pay attention that you should convert its result in hexadecimal.
Do not forget to trim blanks around the email and use it in lower case.