Twitter open-sources Clutch.io so developers can easily add A/B testing to iOS and Android apps

When Twitter bought mobile A/B testing creator Clutch.io just two months ago, the team behind Clutch promised to open source the components behind both their A/B testing tool, and the company's mobile development framework.

TweetDeck gets a bright, white makeover, but misplaces users’ mentions

TweetDeck updated today with a lighter, brighter color scheme, a number of incremental improvements to help power users make the most of their columns, and one noticeable flaw that prevents people from viewing all of their mentions in the order they received them.

Twitter takes aim at video, acquires video clip service Vine

The latest company to get acquired by messaging social network Twitter is video service Vine, which never launched to the public.

Ron Conway and Jack Dorsey team up to promote job creation in San Francisco (video)

Conway's latest viral video, which he describes as a "gift to San Francisco," is already making its rounds on the Internet. It's not surprising, given that the stars of the new video boast a combined 4.2 million Twitter followers.

Sorry TwitVid, Twitter might be building its own video hosting service

In a move that's on par with the microblogging social network's current business strategy, Twitter is rumored to be building its own video service.

Andreessen-Horowitz expands social by hiring Twitter vet

Looks like Andreessen-Horowitz is building out its social investments side of the business. It came out today that the venture firm hired Twitter culture guru Elizabeth Weil to help expand its social know-how.

How to watch the presidential debates online

Unlike the last election cycle, the 2012 presidential debates will be available online. You might want to turn off your TV to watch these ones -- or at the very least, keep your smartphone or tablet handy.

Twitter’s new solution for measuring brand campaigns: in-tweet surveys

Twitter is testing the theory that advertisers want more than just campaign impression and click-through data to understand the value of paying to promote messages on the information network.

Why you should never, ever use a question mark on Twitter or LinkedIn (infographic)

Is it best to share on Tuesday or Thursday? Does it matter if your tweet is 15 words or 25? And does using a question mark really reduce your chances of viral growth?

Twitter reaches out to shy new users with a better Discover stream

Around half of Twitter's users don't tweet -- they consume. And today's news makes the new user's reading and watching experience even better.

Instagram tops Twitter in daily mobile users, engagement

Twitter has a serious challenger in photo-sharing phenom Instagram, which won the all-important race for mobile attention in August.

Exclusive: Buffer partners with “#1 Twitter client” TweetCaster to make you more popular

Social engagement tool Buffer will be announcing an integration with top Twitter web and mobile client TweetCaster tonight.

HootSuite takes social media management into Yammer territory with Conversations

HootSuite announced an new update to its popular social media management utility today, adding functionality that veers into intranet-light territory similar to a Yammer or a Chatter.

Terrible NFL replacement refs take the social media spotlight

Last night, the Seattle Seahawks beat the Green Bay Packers after the referees blundered an important call. Today, the Twittersphere and other social networks are buzzing loudly about the replacement refs and calling for the NFL to bring back the pros.

Twitter to add Hollywood bigshots to its board

Twitter is stepping up its ties with the entertainment industry by eying some high-profile media executives for spots on its board of directors.

Twitter mulls a replacement for follower counts

Twitter might be considering a replacement metric for follower count that more accurately measures how influential users are.