To get started with Twitter on Justin.tv, simply click the "Twitter" tab across the chat on any channel page. You will be prompted with a popup to log in to your Twitter Account.
You should see your Twitter username appear across the top of chat, indicating you are logged in. You will then be prompted to update your Twitter status with a message about what you are watching. This message will be posted to your Twitter update stream.
Once you've updated Twitter, you will see all other Twitter users’ messages from this channel. You can also get just the updates from those Twitter users you are following by clicking on the "Following" tab. Every time you post message in the chat window, it also will be posted to your Twitter feed, along with tags for Justin.tv and the channel you are watching appended to them. Updates from other Twitter users also will appear in real time. Clicking on a users' name or photo will open up their Twitter stream.
You can also see these updates in aggregate on Twitter by going to search.twitter.com and searching for "#jtv #channelname". As more people use the Twitter integration on Justin.tv, the hash tags for Justin.tv (#jtv) and our channels such as #officecam should get on the trending topics lists.