Ask HN: How to Disrupt?

Thoughts, ideas and suggestions? We have great articles on "How to become a hacker":ESR and "How to start a start-up":PG. I though it would be interesting and useful to explore "How to Disrupt?" Disruptive ideas should be push enough to make then your new need. Now days we use google, for almost everything online search, bookmarking, history, cache, research... essentially google disrupted market so much that it has become a daily need(if you are online).