You can create a "gif" through a computer program or on various online websites and then upload it in the same way you would upload a normal picture.
By uploading a gif as your profile picture instead of a standard picture.
You can't.
The Avi on Twitter is your profile picture (Avitar).
if you do not have a picture on twitter that is what comes up as your profile pic.
Its basically your twitter "profile picture"
Clicking on the picture on their profile will open a larger version unless their profile is protected.
You go to edit profile, click browse and choose a picture from your computer .
Go to settings>Profile and change the profile pic.
@justinbieber
Profile pictures on Twitter are usually refered to as 'icons', although there is no official name for them.
You click on upload a picture!
You must link it to Google or Twitter or Facebook and then Answers.com uses your Profile Picture.
You need a picture with a .gif format. And it has to be animated.
It is called an Avi (avatar) or DP (display picture.)