The fear of rejection when someone doesn't answer a Facebook message lacks the impact of an ignored phone call, according to Wallace.

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It would be rude to be speaking to someone face-to-face then answer a phone call, but I can be talking to someone, or even sitting listening to a professor in a class, and also quickly answer a text message at the same time.

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He believes that many search engines, message boards and answer sites leave surfers empty-handed.

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