Have you noticed a Twitter avatar with a small image of underlined Internet Explorer logo, Twitter bird, or simply a yellow ribbon? If you did, you probably know that these people support some kind of cause using new Twitter application called Twibbon.
For those who still do not understand what it's all about, I will try to explain it in a simple manner. Have you ever supported some politician and wore a badge with their picture? Have you ever had a red ribbon to support people with HIV? The Twitter ribbons are something similar.
TWItter + riBBON = TWIBBON
The most popular cause supported on Twitter was the Iranian president election and it was turning your Twitter avatar green. The same system is used by Twibbon.com where you can select 1 cause you want to support. For example, "I ♥ Twitter", "IE6 must die", "DDOS sucks", "Supernatural", "I love Harry Potter", "#iamthemob" etc.