Juan Carlos Perez, IDG News ServiceAssistant News Editor, IDG News Service

Juan Carlos Perez covers e-commerce, Google, web-application development, and cloud applications for the IDG News Service.

Twitter finishes massive infrastructure migration

Twitter has wrapped up a major overhaul of its IT infrastructure designed to dramatically enhance the microblogging service's uptime, performance, and availability.

Google revamps Docs comments feature

Google has upgraded the ability to post comments and respond to them in its Docs office productivity applications.

Google buys video-enhancing company to boost YouTube

Google has acquired an Irish company for technology that will allow YouTube to automatically improve the quality of videos stored on the site.

Twitter: 1 billion 'tweets' are sent every week

To celebrate its fifth birthday this month, Twitter has released a fresh set of stats about its growth and usage.

Twitter clamps down on client apps

Developers working on client applications that replicate Twitter.com's basic user functionality should turn their efforts elsewhere, because the company doesn't want any more such apps on the market.

Google starts letting search users block domains in results

Google is adding a feature to its search engine that lets users block out all links from specific domains in their query results.

Google trots out Gmail feature to auto-label

Google will start a public test of a new Gmail feature that will automatically label certain types of mass and automated e-mail so that users can more easily recognize and assign proper priority to them.

Warner Bros. tests Facebook movie rentals

As if users needed another reason to spend more time on Facebook, Warner Bros. has started offering movies to rent or buy and view on the site.

Developers like Tweet Button, want better analytics

Developers and publishers who have adopted Twitter's Tweet Button say the tool is beneficial in letting their site readers and application users conveniently share links on Twitter, but that some features can be improved, including its analytics data and mobile functionality.

Microsoft's Bing taps into online coupon fever

Microsoft is responding to the online coupon frenzy by adding results about special deals to its Bing search engine, both on its desktop and mobile versions.

Google to let Apps customers buy extra storage for Docs

Google will soon start letting Apps users buy additional storage for some of the applications in the hosted collaboration and communication suite.

iPhone users get access to Argon augmented reality browser

An iPhone version of the augmented reality Argon browser, which lets users scan places and objects with the phone's video camera and see Web content overlaid on the screen, is now available.

Google updates Social Search

Google is rolling out several enhancements to its Social Search feature that make links from someone's online circle of friends and contacts more prominent in query results.

Google payment system for publishers rivals Apple's

Google Wednesday launched a payment system for publishers of digital content, one day after Apple unveiled a similar system for its App Store.

Yahoo preps 'digital newstand' for tablets and cell phones

Yahoo has announced a "digital newstand" called Livestand for tablet devices and cell phones that has been designed to deliver content from the company's various sites and online publications.