Facebook, Google and LinkedIn all previously chose Ireland for their European bases.
The social media giant allegedly provided incorrect details for the Commission’s 2014 investigation.
Circulate has managed online marketing for acts like Faithless and Jonas Blue.
Sinéad McSweeney is taking over from Mark Little as managing director of Twitter’s Irish operations.
Health campaigners have called for tighter rules to be introduced in Ireland.
The former RTÉ journalist, who founded social media agency Storyful, decided against a move to the US.
The PRII will host a round table with bloggers to create clear guidelines on disclosing payments.
The platform is used by over 100 million people a day.
The tech giants have faced accusations of influencing the US election since Donald Trump’s victory last week.
The company has recorded huge increases in ad income – but it expects that growth to slow.
The social networking site plans to shed 9% of its global workforce.
Total spending across all platforms has gone up one-third in a year.
The social networking site has put itself up for sale – but interest seems to have dried up.
The social media company’s head of sport says it is also eyeing up deals to air e-sports.
The social media behemoth has entered the office productivity space with an aggressive pricing model.
The message-sharing app could go public as early as March in the biggest US listing since 2014.
The micro-blogging site was tipped to start accepting offers for new owners this week.
Social talent agencies are a big industry in the UK – and now Ireland is catching up.
Celebrity endorsements have helped this entrepreneur build his small Dublin salon into a global business.
Shares were up 15% at the social media giant when trading started today.