This is a fabulous article showing how Twitter leverages the power of people to ensure relevance on searches for trending topics. This is a great example of the synergy possible between people and technology. Too often I think that solutions are unidimensional, we either put the whole load on people, or try for end to end automation and exclude people except as exception handlers after the fact. Fabulous and creative answers to hard problems are possible when people are included and they have access to tools that fit the task.