Google, don’t be evil (with your Search network)

Their mantra is ‘don’t be evil’ right? Isn’t transparency Google’s middle name?
So why is it that after installing a real-time site tracking tool (statcounter.com) to my PPC landing pages, I see several (50-60%) of all inbound, paid clicks being referred from websites or pages of questionable quality? Did I mention that, as always, my content network option is most definitely set to ‘off’?
