My experience of ads is that they're much better than they were in the early 2000s. Back then major websites would have literal scams advertised on their site. Things like you're the 1 millionth visitor click here to collect your prize. Now I rarely see that sort of thing.
Perhaps scams have a high selection pressure to evolve to be less detectable (while we are also being trained to detect them better). You might be seeing plenty of scams, but they are just camouflaged far better?
