Ahh, Twitter. Newly minted as a public company. Valued at some $30 billion. But also about to enter that routine that can be painful for a big company of any kind. The quarterly earnings report. At best, Twitter's revenue plan might be called...still emerging. And, here's a place you wouldn't expect to find an award-winning app: A cattle farm in Scotland. The application is, yes, for cattle management. It was designed by teenagers as part of a contest put together by an organization called Apps for Good.