I’m a net-activism fiend. Check out my “action” for renewable energy at Change.org, as well as this week’s Media Mayhem column on the Mother Nature Network:

One afternoon last week, I joined seven different environmental communities, signed four petitions, sent letters to both my senators, let hundreds of friends in on a new way to fight climate change, agreed to reduce my family’s carbon output by .94 tons a year, and founded a campaign calling for all electric utilities to get at least 20 percent of their power from renewable sources.

Oh, yeah. I learned a little later that I’d raised a whole penny on behalf of the cause “Stop Global Warming.”

John Muir, eat your heart out.

Muir spent most of his life (which lasted from 1838 to 1914) crusading for wilderness conservation. He climbed peaks above the Yosemite Valley, camped out with Teddy Roosevelt and founded the Sierra Club.

Nowadays, anybody can go to sierraclub.org and, in about minute, fire off a personalized letter on one of about 30 environmental issues to his or her congressperson.

My own orgy of activism was prompted by a decision to figure out how to effectively use 50 or so interactive communities and social media websites that focus either exclusively or to a great extent on the environment. I found that the sites can be fun and feel empowering — in the same way, say, that blazing through an easy crossword puzzle might be exhilarating.

Read on at Mother Nature Network …