Did you hear about Gravatar?
It is a picture you link to your e-mail account, and it is then shown on the websites where you use this e-mail address, e.g. TimeLog Project. The picture automatically follows you, and is shown where the supplier has enabled the functionality.
You e.g. see gravatars when you search for employees or contact persons in our super search field.
You may read more about Gravatar and how to create your free profile here.