Amazon.com stumbled for a short time on Thursday with aspiring visitors tripped in their efforts to reach the online retail titan's main shopping website.
Twitter's iPhone video-snippet sharing service Vine had concerns about porn exposed on Monday after adult content was bared briefly in an "Editor's Picks" section.
WhatsApp's mobile messaging service used by hundreds of millions of customers worldwide breached privacy laws in at least two countries, a joint Canadian-Dutch probe concluded Monday.
Twitter on Thursday launched Vine, a service that lets people share video snippets from iPhones or iPod touch devices.
Microsoft on Wednesday sent out word that it will "retire" its Messenger online chat feature on March 15 and replace it with the Skype Internet telephony service it bought last year.
Facebook sidestepped a privacy gaffe on Monday by fixing a flaw that made it possible to snoop on private New Year's Eve messages sent using a "Midnight Delivery" service.
Nielsen on Monday announced a deal to tap into Twitter to gauge how much online buzz is being generated by television shows instead of simply focusing on numbers of viewers for programs.
Twitter on Monday added Instagram-style smartphone photo sharing features after the Facebook-owned service made it impossible for Internet users to integrate its images into tweets.
Facebook was unreachable briefly after the social network made a change to part of its infrastructure dealing with routing traffic to its online address.