An avatar is a online representation of yourself. In personal life you can use avatars just for fun, to add a fun component to the learning space, or to use to communicate with other people around the world at one site. I have not previously used an avatar and this is what i think about the 3 sites i visited. I liked clay yourself the most. Go animation is a slow web site and does not let you make an avatar just movies, where clay yourself is quick and easy to use. The voki site has very limited restrictions on the character design, where clay yourself has more personalized options. Finally clay yourself is a very neat and organized site.