AmiMoJo writes: More than four times as many tweets were made by automated accounts in favour of Donald Trump around the first US presidential debate as by those backing Hillary Clinton, a study found. The research indicates the Republican candidate would have enjoyed more support on Twitter even if the accounts — known as bots — had not been active. But it highlights that the software has the capacity to "manipulate public opinion" and "muddy political issues". The report has yet to be peer-reviewed. The investigation was led by Prof Philip Howard, from the University of Oxford, and is part of a wider project exploring "computational propaganda".