Amazon invests $175M in Groupon competitor

(AP) -- Amazon.com Inc. said Thursday that it invested $175 million in social coupon service LivingSocial - the latest sign that the online retailer is delving into promising new methods of e-commerce.

Zynga buys rising mobile game star Newtoy

Zynga, king of online social networking games, is following its fans onto smartphones and other mobile devices with the acquisition Thursday of rising social play star Newtoy.

Facebook lets friends share online memories

Facebook on Thursday launched Friendship Pages at which online pals can stroll virtual memory lanes that chronicle what they have shared at the world's top online social networking service.

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