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1. A portmanteau of the words wiki and activism or slacktivism.

2. Collaborative and often decentralized activism via the internet.

3. A network of people, often strangers, using the internet to work together toward a common goal.
In defense of the anti-secrecy organization Wikileaks, groups of hackers such as Anonymous and Gnosis successfully carried out DoS attacks on websites that ousted Wikileaks from their servers. These decentralized but collaborative attacks were a grand act of wiktivism.

Many cycling advocates are turning to wiktivism to promote bicycle safety and awareness using Twitter and popular hashtags such as #whyweride and #bikenews (See @bikecommutenews)
by ohaijoe December 14, 2010