CNET reports that Apple's App Store reached another major landmark, amassing 50 billion app downloads, according to the countdown timer on Apple's Web site and in iTunes. Apple also confirmed the milestone on Twitter saying, “We just hit 50 billion app downloads. Thank you. It couldn't have happened without you.” . Read More

TechCrunch reports that Twitter has acquired Lucky Sort, the Oregon-based data visualization startup with the navigation engine TopicWatch that helps find patterns in live data streams. The financial terms of the deal have not been disclosed. Read More

TechCrunch reports that Twitter CEO Dick Costolo has resigned from his position as a U.K. director of the company, just days after Twitter subsidiary TweetDeck was dissolved as a separate U.K. business by business registrar Companies House, according to Sky News. Read More

Mashable reports that Twitter has purchased a small scalable computing startup called Ubalo. The terms of the deal were not disclosed. . Read More

About.me today announced that it has acquired Wefollow, a directory service that allows people to find others having similar interests such as sports, politics, etc. Wefollow’s scores and algorithms help to organize and surface users, and will become a search offering on the about.me platform. . Read More

LinkedIn, the professionals' social network, with over 200 million users, 3,700 staff and 26 offices worldwide has turned 10 years old. It was co-founded by Reed Hoffman in . Read More

VentureBeat reports that Twitter has improved user experience on its iOS and Android apps with the introduction of a couple of new features. . Read More