Research sheds light on Amazon vs. Wal-Mart competition

After Amazon announced plans last week for a day of online retail discounts July 15 comparable to Black Friday, Wal-Mart is launching a rival sale online the same day. Who will win the e-commerce battle? Winning is a matter ...

Facebook use predicts declines in happiness, new study finds

Facebook helps people feel connected, but it doesn't necessarily make them happier, a new study shows. Facebook use actually predicts declines in a user's well-being, according to a University of Michigan study that is the ...

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