1. An avatar is a character that you can create online. You can make it look like your self or you can make it look like something else.
2. Someone might use an avatar in personal life when they are creating a account online. Someone in educational career or business, if you want to work with computers and video games.
3. No
4. Of the 3 avatars I liked Clay Yourself because they looked more real and they had more choices for the hair and things like that. Also I liked it because it was easy to use