The Web 2.0 could be
defined as a collection of open-source, interactive and user-controlled online applications expanding the experiences, knowledge and market power of the users as participants in business and social processes. Constantinides & Fountain, 2008 Social media are the social aspects of the web 2.0 applications: participation, openness, conversation, community and connectedness. SpannerWorks, 2007
It is possibile to increase
the audience reach through the web... When I go online I “talk” YouTube, MySpace, to my friends about Facebook, Xanga, Flickr, different things, and also about my ideas, Digg, StumbleUpon are perspectives, opinions, all media that could be etc... So it makes sense to used for extending the think of the Internet as a campaing and spreading place where real messages. conversations take place.