WHAT IS TWEETDECK?
TweetDeck is an app that makes it easy for users to manage their Twitter account.
Using TweetDeck bands can track conversations, schedule tweets so they post at a specific time, and monitor and manage their followers.
TweetDeck is available on both Mac OSX and Windows, as well as a Chrome App.
From the app description:
TweetDeck makes it easier for publishers, marketers and power users to track the real-time conversations they care about. It brings more flexibility and insight to power users through a customizable layout that lets you keep up with the people and topics that matter most to you. And, you can join the conversation by tweeting, sharing photos and links to news stories, and more.