As more and more people are using Twitter as a means of sharing and communicating, it seems that almost every web and mobile application on the planet as a "Share this on Twitter" feature. Most of the time, this feature is welcome. Posting Foursquare mayorships, new blog posts, entertaining YouTube video, etc. But sometimes, it's a problem. Namely, when a web application doesn't include the option to not post to Twitter or makes the button hard to find or easy to miss.