Adding further to its defence, Facebook said, "We take our role very seriously and we are working hard to improve. We've done a lot of work and research with outside experts and academics to understand the effects of our service on well-being, and we're using it to inform our product development. We are also making significant investments more in people, technology and processes, and – as Mark Zuckerberg said on the last earnings call – we are willing to reduce our profitability to make sure the right investments are made."