TECHNOLOGYNest halts sales of smoke alarmNest Labs, a digital-thermostat maker acquired by Google this year, is suspending sales of its smoke alarm after it determined the unit could be switched off unintentionally. The company recommends that users disable the Nest Wave feature on the alarm that enables customers to easily turn off the product with a swipe of the hand, Tony Fadell, chief executive officer of Nest, said in a statement Thursday. FINANCETech stocks pull Nasdaq downStocks fell Friday, with the Nasdaq composite index sliding the most in two months, after large technology stocks from Google to Yahoo plunged as investors sold the bull market's biggest winners. SOCIAL MEDIATwitter unveils messaging appTwitter said users of its Vine video application can now send their contacts private videos and other messages, stepping up competition with Facebook in the mobile-messaging market. Twitter, which also lets users directly message one another through its main smartphone application, is adding the communication capability to Vine just months after Facebook's Instagram mobile photo-sharing application made it possible for people to do the same. E-COMMERCEGrubHub IPO sees shares soarShares of GrubHub Inc., which lets hungry city dwellers order food online, climbed on their first trading day after the company raised a higher-than-expected $192 million in an initial public offering. GrubHub charges restaurants a commission when a customer places a takeout or delivery order through one of its websites, and investors are betting the company can keep expanding beyond 28,800 restaurants in 600 cities from San Francisco to London to capture more users.
Reported by SFGate 55 minutes ago.
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