Tweeter allows your Concrete5 site to automatically create a tweet on Twitter when you update or create a page. You can choose whether to create a tweet for either updates or creations or for both events by ticking the relevant checkbox in the dashboard.
Tweeter also allows you to select pages you do not want to be tweeted, e.g. pages behind logins, by simply setting an attribute in the pages'properties.
Tweeter will also automatically shorten URLs for you using TinyURL if the length of the message is too long.