Social Media - any online tool or application that goes beyond simply providing information, instead allowing collaboration, interaction, and sharing. Examples of social media include: blogs; microblogs; wikis; photo and video sharing; podcasts; virtual worlds; social networking; social news and bookmarking; web conferencing and webcasting.
We have two team members in our group.
Samuel is in charge in researching and Alicia will be stetting up and working on the presentation.  
For example:

EPA’s policy to use social media where appropriate in order to meet its mission of protecting human health and the environment. Agency product review processes in place for regional and program offices apply to EPA’s use of social media. 
http://www.epa.gov/irmpoli8/policies/social_media_policy.pdf