Randomly start talking to people at a conference. Head out to a bar, have a few beers, decide to build a mailing list and take down a botnet together. Create professional life partnerships. One of the more successful patterns, because you believe you can do anything when you get a few beers in you. All other (successful) patterns usually have origins in this pattern, or something like this- could be a bar, could be a game night at a coffee house, beer helps, but isn't always required.