what is it to twitter twitter?

[Signlady]

I keep hearing about it

[GosuStu]

Twitter is a social networking website where users microblog 140 characters, similar to the status update on Facebook. It is being used as a viral marketing tool by many companies.

[revshirls]

To twitter twitter is much the same as to google google except twitter is a social network. Here is twitter's website:http://twitter.com/ and here, on wikipedia, you can read more about twitter:
http://en.wikipedia.org/wiki/Twitter