One of the biggest issues in the startup process is developing clarity. Being able to get to the point in a very effective way. Often my ideas are crystal clear to me, but they are all dreamy in some parts and all too detailed in other parts, in a way that makes it very hard to communicate. When you spend the time to go through and think out enough of the process so that you can get a clean and crisp communication of your idea, you have often done some of the core work that needed to be done to move the business idea forward.
While people suggest creating an elevator pitch, there is a certain poetic quality to writing a business idea in 140 characters. If you remember to put a URL in the post, it probably should be 120 characters.
If you can create this level of clarity, where the twitter post captures the essence of your business idea, you have gone a long way to being able to communicate your project. With that comes a significant momentum that will move you forward.