Imagine a world with no more advertising, no more provocative headlines, no more undesirables! Imagine that you can finally filter out what you hate or find merely annoying, with fine-grained control and a system that learns as you walk around town!
This can all be yours with augmented reality and a spam service like Mollom. If you pass a billboard with a scantily-clad woman or that proselytizes a religion you don't belong to, mark it as "abuse" and Mollom will learn based on what you don't want to see.