Another example of the innovation that Twitter drives is Twitterfone. Twitterfone allows you to post tweets by dialling a local number from your mobile. This is an easy way to post when you're out and about and is great for people (like me) who get charged extra for sending to Twitter's SMS number. Twitterphone even provides a URL to listen to the original message.
It's fascinating to see the new and innovative ways that people use the Twitter API to improve usability and add value to the basic service.
