Parked domains are generally low quality resources, housing value-less directories or pages of AdSense ads. Why then is the proportion of AdWords spend that is going to these parked domains on the rise?
Turning off this source of traffic in AdWords is possible, but hidden away. Therefore Google, as well as the domain owner, is using increasing amounts of your campaign budget on what appears to be low value traffic.
You have probably come across sites such as the one in the image, a defunct domain allowed to lapse by its owner that has now been taken over by a pointless directory that nobody would ever use to real purpose.
