Voters ‘used as lab rats’ in political Facebook adverts, warn analysts

Parties are all involved in a targeted experiment that campaigners warn lacks transparency and could harm democracyThe three main political parties in England and Wales are using Facebook audiences “as lab rats in a giant experiment”, according to the first detailed analysis of online advertising during a UK election.Campaign group Who Targets Me?, which was established to monitor online political ads, has been examining how parties used Facebook before the election was called and in