Google has announced the launch of their URL shortening service (http://goo.gl/) that allows users to shorten a long URL address for convenience of sharing it with others on microblogging sites like Twitter.
Users share a lot of links online especially with microblogging services such as Twitter growing in popularity. URL shorteners, as its name implies, reduce a long URL into fewer characters to make it easier to share with others. With character limits in tweets, status updates and other modes of short form publishing, a shorter URL leaves more room to say what’s on your mind — and that’s why people use them.
Google URL shortener is not a stand-alone service; you can’t use it to shorten links directly. Currently, Google URL Shortener is only available from the Google Toolbar and FeedBurner. If the service proves useful, it may eventually make it available for a wider audience in the future.
Source: Official Google Blog