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Users ignore "real time" results in searches. That's the conclusion of some eye-tracking studies carried out on people doing usability studies with Google results, and it might not be good news for Twitter - which has done deals with Google and Bing to let them index its content and serve it up in the results for searches. Google is reckoned to be paying $15m, and Bing $10m - though the length of the deal isn't known.
They should have the data to see that this first implementation isn't really working very well.