Hobby horse? @OldHag
Just spinning back on this subject.
Please be aware that the ads are based on individual browsing history and settings. Which is the joy of how cookies work across the internet these days. This means that ads are sorted based on the devices and users history, rather than just being totally randomised.
I am not sure from some of the comments here that everyone quite realises this, so just popping by as had my attention drawn back to this earlier today.