Supporting or rallying a cause via Twitter

Twitter is a great tool to get a message across. If you are pushing for a cause, it's a great tool to keep your followers up to date on what is going on. @officialpeta (Peta's Twitter site) is a great example. Check their page out to know who's in the bad- who's in the good- and where you can get all the good stuff free of animal testing and bi-products.