Social Media Segmentation: How much is too much?

Social media has been a hot topic in organizations as a marketing effort and a way to communicate with interested parties in a way that they already utilize on a daily basis. Obviously, we have proven that this is something that can be done both well and disastrously. An example case is right under our noses here at CMU. Many departments have social media presences on Twitter and Facebook. However, it is difficult to know who does and who doesn't. There is not common directory nor naming scheme. One effort that the university has tried is to make the links to their overarching official social media pages available via the website. However, because of the presence of all of these various pages, communications are actually being missed. People can connect with so many pages they feel like how could they possibly have missed one, when in reality, they may be missing several communications. It also could allow for organizational mission segmentation. When you have over thirty people posting on various social medias, how can you ensure that the message is the same.