Friends, advertising people and activists - especially all you technophobes - here's an absolutely wonderful concept i'd like to point you towards. It will get you a much larger audience than, for example, this blog would. But then, so would the sound of one hand clapping. Anyway, "Apart from actual prisoners, you won't find a more captive audience than people in their cars," the site says, and goes on to explain: "Here's what you do: 1) Put paint on cardboard 2) Put cardboard on freeway 3) Repeat"
Now hie thee to FreewayBlogger.com and check out the wonderful examples they have up there. And if you're considering doing a little lo-tech blogging yourself, do check out their "How To" page.
[P.S. Where are our manners? Thanks for the link, Roma.]