Avatar is a symbol of identity, it's the most frequently used on the internet after a nick name. Almost all social networks use avatar, including Twitter. I'm sure you want to make your avatar look different, or you want to customize your avatar with themed icon for a special event.

I recommend 2 online tools to make avatar overlays, Avartize and Twibbon. Both of them have nice features that allow you to campaigning on a cause or simply to decorate your Twitter avatar.


Twibbon

Twibbon is the easiest and most powerful way to promote awareness of your cause on Twitter. The service overlays a small icon onto supporters' profile images to create a 'Twibbon', making an impactful online statement. The user's Twitter account automatically tweets to let everyone know about their affiliation.

Avartize.com gives you, the Twitter user, the option to easily pimp your profile picture, also known as your avatar. Set your state to "busy," tell your friends you're on fire - or let everybody know you are out taking in that special event.