Twitter’s ad platform has been criticised for its lack of transparency and lack of moderation, as it allows advertisers to “lose billions of dollars a year”.
The company has been hit with a class action lawsuit over the problem and now faces a lawsuit by a former employee alleging that he was misclassified.
The case is set to be heard in New York City this week, according to CNN.
A US law firm, Pepper Hamilton LLP, is representing the former employee, who is identified only as JP in the lawsuit.
JP told CNN that he and his co-worker “were all about ad targeting” when they were working for Twitter in late 2014 and early 2015.
“We were in charge of the entire ad buying, marketing and promotion for that campaign,” he said.
“The goal was to sell our product to as many people as possible.
We were all focused on the end goal of getting as many impressions as possible.”
Twitter’s response to the lawsuit was vague, saying it “remains committed to fostering a culture of transparency” and had “made changes in the past”.
“The issue that arose at this time was that we were not sufficiently transparent with users and our users were not appropriately represented,” it added.
The company is now set to face more pressure from the class action suit.
The lawsuit is the latest in a string of lawsuits filed against Twitter in the US over the past several years.
In September, the Federal Trade Commission (FTC) filed suit against Twitter for alleged anti-competitive practices.
Twitter has since been sued in several other countries, including in Australia, Canada, France, Germany, Italy, Japan, New Zealand, Singapore, Spain, and Switzerland.
Twitter’s stock fell 3.5% in after-hours trading on Tuesday.
In a statement, Twitter said it would respond to the allegations “in due course”.
“We have made changes in our advertising platform to provide our advertisers better visibility and control over the way they reach consumers,” the company added.
“As we said before, our ad platform is an important part of the overall platform and we remain committed to supporting a vibrant marketplace.”