Twitter.

Twitter is an online social networking service and microblogging service that led usera to send and read messages, but only with 140 characters known as 'tweets'.
This social networking was created in March 2006 by Jack Dorsey, and by July the site was lauched. It gain popularity very quickly. Now has aproximately 200 million users, and over 340 millions tweets per day.
Twitter has becoma one of the most visited website on the Internet, and its has been described as 'the SMS of the internet'.

The Logo.
The name of the bird; Larry, came from a NBA player called Larry Bird from the Boston Celtics.

How to use Twitter