I guess because it helps solve crime. Facebook is a real crime solver in the UK. One of my friends is a insecurity finder - he gets paid to find ways into computer systems so they can fix them. He seems to find easy access into so many systems.
When you are on the net, like this forum, is it really coincidence the adverts are things I sometimes click on? I really think that the covert monitoring already happens and has a benefit. Personally, the idea somebody is watching what internet sites I visit, or listening to my conversations is actually OK with me? At first I thrust my chest out with indinancy about the violation of privacy, but then somebody gets killed buy a citizen already being followed by the security services. We have crazies of all persuasions so if that means the loss of a bit of privacy I can live with that - and my three purchases today inspired by 'random' adverts have been a benefit.
If it's OK to spy for one reason, why not another. If I was buying say diesel, fertiliser and large storage vessels and also buying electronic alarm clocks I really hope the Government know about it. This is the world we live in. George Orwell was so right wasn't he? The only thing he got wrong was the thought police, but now, this bit seems to be happening - big names, outed world wide for things they didn't do, because a few others did! People who lose prospective jobs, contracted jobs and long time served jobs because at some time in their past they said something - that at that period in time was perfectly acceptable, but now career ending. We are now penalising people for what they think, and that is the biggest civil liberty crime. Somebody on a UK forum for backstage folk got ripped a new one this week for using a phrase I personally have used since maybe 1984. I don't even feel comfy here typing it. It's a perfectly innocent accurate phrase using the common name of a product all events and theatre folk use. He used it, probably for the umpteenth thousand time in a venue and a recent graduate snowflake reported him for making racist comments. The phrase relates to a process of getting certain common products into the air, ready for the show. It has no bad context, and the words are in common use - however the phrase could be misunderstood if the person doesn't know what things are called.