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Yelp ratings get better when they cost something—like time

An international team of researchers tested the idea that free online ratings are less trustworthy than those that have some cost to them, drawing from the ecological theory known as "costly signaling theory."

Online mirrors: Video bloggers and viewers share emotions

An amusing commercial shows someone having a bad day, and how that person's mood affects each person down the line, with more bad moods. This emotional "contagion" may be a real-world phenomenon, and it appears that what ...

YouTube's first decade shows sharing free content pays off

YouTube's legacy extends beyond its pioneering role in the Internet's video revolution. The 10-year-old site provided a stage for exhibitionists, narcissists and activists to broadcast their opinions, show off their talents, ...

Yahoo, pay-TV operators among Hulu bidders

Online video site Hulu is again up for sale, with Yahoo and pay TV operators DirecTV and Time Warner Cable among the seven bidders, according to a person with direct knowledge of the matter.

Yahoo! sets event amid Tumblr talk

Yahoo! scheduled a news conference Monday amid reports it was in talks on with the popular blogging platform Tumblr about an acquisition or strategic alliance.

YouTube launches pay channels with campy flicks

Children's shows like "Sesame Street," inspirational monologues by celebrities and campy movies—these are among the offerings on 30 channels that will soon require a paid monthly subscription on YouTube.

Rights group presses Twitter on 'hate speech'

A Nazi-hunting group urged Twitter and other social media Wednesday to step up efforts to remove online "hate speech," citing a surge in incitement to attacks like the recent Boston bombings.

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