What are the advantages and drawbacks of universities using social media to communication with stakeholders -- students, potential students, alumni, donors, etc?

Do you think there are more or fewer communication barriers when using social media?

Be thorough in your answer. What should managers do to be sure they communicate effectively when using social media?

Looking at the rules and regulations that universities are establishing, do you think that business organizations shoud have rules for employees using social media?

What types of rules do you think you be necessary?

What have been your experiences -- both positive and negative -- with social media. From your experiences, what guidelines could you suggest for managers and organizations?