Social media is an interactive form of media that allows for real-time feedback and sharing of information. It includes tools like Facebook, Twitter, YouTube, and Flickr. The Fairfax County government uses social media to engage with residents, provide timely information to large audiences, and answer questions. Some key initiatives have included providing updates about H1N1 vaccination clinics on Facebook and Twitter and addressing resident questions during Snowmaggedon 2010. Mobile access to social media is increasing as more people use smartphones.