Hot on the heels of Facebook overtaking Orkut as India's most prominent social network with 21 million vs. 20 million unique visitors in July, the company opened up its much anticipated office in Hyderabad earlier this week. Headed by Kirthiga Reddy and Manoj Varghese, the Indian team will include more sales and operations as well as multi-lingual support staff in order provide round-the-clock international support.

Paul Allen, entrepreneur and cofounder of Microsoft, has filed a lawsuit against 11 companies for infringements on his Web search patents. Announced on Friday afternoon, the suit names Apple, Google, Facebook, Netflix, YouTube, and Microsoft partner Yahoo as defendants for violating four Interval Licensing LLC patents, though the court will likely have to weigh whether the patents in question are "obvious" or not.

The patents revolve around three main concepts: browser use for navigating through information, managing a user's peripheral attention while using a device, and alerting users to items of current interest. They collectively address the general concept of presenting searched-for information to a user along with related news articles, media (such as music or videos), status updates from friends, or data (such as stock or weather info).

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In a rather small survey conducted by a young psychologist, Facebook was shown to have some interesting correlations with self-esteem and narcissism in young adults.

In a survey of 100 college students, young people with narcissistic personality traits…

Yesterday, Facebook held a developer's garage event at their headquarters in Palo Alto. To kick things off, CEO Mark Zuckerberg took the stage to talk a bit about the history of Facebook. Notably, he focused on Facebook Photos as being a key catalyst that led to everything the social network is today. He noted that when they launched the product, they didn't have all of the features that their competitors did. For example, they didn't have high-resolution photos and you couldn't print them. But one thing they did have was the social element -- and this changed everything. "Those features by themselves were more important than anything else combined," Zuckerberg said of the social elements of Facebook Photos. He then dropped the competitor bomb. "The photo product that we have is maybe five or six times more used than every other product on the web -- combined," Zuckerberg stated.

While checking into a Facebook Places location recently, one Mashable reader noticed a new tab: Photo Memories.

We’ve been unable to duplicate the same tab ourselves, which means Facebook may be testing this feature with a small number of…

Facebook has made its grand entrance into the geolocation space with Facebook Places. Will users embrace it and ditch Foursquare?

That’s the question we posed in this week’s Web Faceoff, our ongoing series comparing technology apps…

Microsoft Co-founder Paul Allen is suing Apple, Google, Facebook and eight other companies through his current firm, Interval Licensing LLC.

The lawsuit alleges that 11 different companies, including YouTube, Netflix and AOL,…

Google has acquired Ångströ, a service for delivering intelligent search results about a person’s professional network. It has also hired its founder, likely in an effort to build a legitimate competitor to Facebook.

“With the help of investors like…

A class action lawsuit has been filed against Facebook in a Los Angeles County Superior Court alleging that the company commercially misappropriated the names and likenesses of minors without parental consent. The plaintiffs are seeking financial restitution for revenues…

Facebook Inc. is partnering with incubator Y Combinator in a deal that will give start-ups that join the program a range of Facebook resources and expertise–and incentives to use Facebook’s technology.