TwitThis is a Twitter add-on now available for microblogging site Twitter. The browser booklet add-on allows you to send post the page you are viewing to your Twitter account. There’s also a “TwitThis” button you can put on your personal page or website so that readers can automatically Twitt your page. Of course there’s a handy WordPress plug-in so that you can automatically include the TwitThis link on each of your blog posts.

TwitThis is a mashup that utilizes the Twitter API and TinyURL, a service that creates a short version redirect of any URL, so your Twitter tweet doesn’t have to be seven lines long. Twitter has grown a strong following of developers and a long list of tools and mashups.