The document discusses the author's initial frustration with Twitter but then realization of its usefulness for short, personal updates from a phone. Twitter allows sharing updates about one's location and connecting with others. SlideShare is like YouTube but for PowerPoint presentations, allowing sharing of slideshows within groups where people can discuss the topics. The author finds it convenient to link Twitter to other accounts and their phone to easily update status and see what others are doing, while SlideShare lets them share information with a community and get feedback.