slacktivist

a.k.a. slacktivism

A former political activist, whose idea of political activism has changed to that of just forwarding e-mail protests to other slackers.

See also : online jargon  
NetLingo Classification: Online Jargon

Updates

It's a great word, but I don't think it is limited to describing "former political activists." Further, it isn't limited to "just forwarding email protests." I've heard it used to refer to anyone who uses digital tools to support an organization or cause in a surface, quick-and-easy way, like texting a $5 donation to Haiti relief efforts, or signing an online petition, without really becoming deeply involved with the organization or cause.

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