Your picture next to your comments
The readers of this blog will certainly have noticed that for a while now there have been pictures in silhouette next to the comments. These are place holders and your picture can be placed in them.
These pictures are called gravatars (for globally recognized avatar) and they are on many websites. Gravatars allow users to visit many websites using one image and without having to set up an account at each site. The image/account is linked to one specific email account.
In order to get a gravatar, it is necessary to register on the Gravatar website. On this site the email address and image are linked together. Then all that needs to be done when visiting a new site is to enter the email address in the comment section. Everything else is done automatically.