Peak social media? Facebook, Twitter and Snapchat fail to make new friends

As the market matures and young people share elsewhere, growing pains hit Silicon Valley

Snapchat – falling into line behind Facebook and Twitter – has become the latest social network to report declining user numbers in its half year results.

Snap Inc, the parent company of the app known for its disappearing messages and photograph filters, revealed that in the three months to the end of June active daily user numbers shrank from 191 million to 188 million, a 1.5% decline. It followed a controversial redesign that had prompted more than a million people to sign a petition to reverse the “annoying” changes. It has also faced intense competition from Facebook-owned Instagram.

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Predatory publishers: the journals who churn out fake science

A Guardian investigation, in collaboration with German broadcaster Norddeutscher Rundfunk, reveals the open-access publishers who accept any article submitted for a fee

A vast ecosystem of predatory publishers is churning out “fake science” for profit, an investigation by the Guardian in collaboration with German broadcaster Norddeutscher Rundfunk (NDR) has found.

More than 175,000 scientific articles have been produced by five of the largest “predatory open-access publishers”, including India-based Omics publishing group and the Turkish World Academy of Science, Engineering and Technology, or Waset.

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