A couple of things. First, the USA and UK are regulated differently - while you might be right that it's fine in the US, it may not be in the UK. I'm from the US, so I don't actually know, but there's a good chance here given Europe's data privacy laws.
The other is that this might not be legitimate advertising at all. Depending on what eventually shakes out regarding Cambridge Analytica's intent, there might be fraud in play, and conspiracy to fraud to various actors that may have assisted in some fashion. I'm not saying for certain, just raising the possibility as this unfolds.
The other is that this might not be legitimate advertising at all. Depending on what eventually shakes out regarding Cambridge Analytica's intent, there might be fraud in play, and conspiracy to fraud to various actors that may have assisted in some fashion. I'm not saying for certain, just raising the possibility as this unfolds.