What is Internet activism?

Internet activism (also known as electronic advocacy, cyberactivism, and online organizing) is the use of communication technologies such as e-mail, web sites, and podcasts for various forms of activism to enable faster communications by citizen movements and deliver a message to a large audience. These Internet technologies are used for cause-related fundraising, lobbying, volunteering, community building, and organizing.

Online activism can be divided in the following main categories: Awareness/advocacy, organization/mobilization, and action/reaction.

Source: http://en.wikipedia.org/wiki/Internet_activism