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So, the email lists sites that I no longer run ads to and haven't for a long time but they want me to fix the landing pages to those sites even though I don't run ads to them to comply with their landing page quality score.
Have you checked if you really have deleted the ads? Maybe you just did pause them and that's what caused the email?
Considering that Google's revenues are principally from advertisers - I'm not sure Google's all that "stupid".
The problem with Google LPQ team is lack of clear guiudelines with them. They seem to take decisions based on 'guesses' / qualitative 'feel' . I don't know..
In a mail to me they said that 'deleted' ads are no longer taken into LPQ scores..but they may change their understanding or 'rules' any time..
For me, it seems most sites getting banned (mostly affiliate sites) are web pollution; Crowding the internet space and making it harder for people to find what they really want. You can rant all you want but most people don't know or care about Google advertising and certainly don't know or care about any issues the advertisers have, and they'll all continue to use Google to find everything they need. Google is great. Can someone tell me why I'd NEED their site that got banned?