MUMBAI: Twitter‘s senior director of product for revenue Kevin Weil announced the launch of its advertising options for all US users on Tuesday at TechCrunch‘s Disrupt in New York. The company had previously made advertising on the platform invite-only.

The first announcement was made on April 2010 by social media giant stating it would show ads. Since then it has openly promoted tweets and accounts, which lets people pay to get their updates seen and their profiles followed. Additionally, it announced limited availability of a self-serve tool for buying ads in March 2012, and an ads application programming interface (API) for programmatic buying of huge campaigns in February recently.

Last week, Twitter announced that its ads could be targeted based on keywords tweeted or within tweets engaged with by users, which lets Twitter move towards demand fulfillment like Google search ads.

Most recently, Twitter opened its advertising API to third parties, letting larger advertisers to create more refined campaigns on the portal. The company launched that program with five partners - Adobe, Hootsuite, Salesforce, SHIFT and TBG Digital.

"Over the past year we‘ve listened carefully to feedback from the thousands of businesses and individuals who‘ve had access to the self-serve tool, and made enhancements based on their suggestions, including more targeting and reporting in the UI," the company wrote in a blog post. "It‘s because of this feedback that effective today, we‘re ending our invite-only period and opening signups for our self-serve ad platform to all users in the US."

According to eMarketer the company, which is expected to go public within the next year, is projected to earn $1 billion in ad revenues in 2014.