It's an issue of transparency. I don't mind if I know what it will be used for but "sell me some ads" isn't the only thing it's being used for as we have discov

It's an issue of transparency. I don't mind if I know what it will be used for but "sell me some ads" isn't the only thing it's being used for as we have discovered recently. If Facebook et Al. were more transparent about exactly how it is used then users could decide if the cost is worth it.