Google is modifying the way they define keyword quality by considering the ‘commerciality’ of the keyword. In a recent interview a Google product manager suggested that Google will deliver more impressions for queries for which ads are useful and fewer ads on queries for which users might prefer not to see them.

The interview cited an example where queries such as ‘dog friendly parks in Mountain View’ would show fewer ads as Google feels users typing in these queries are most likely not interested in a product or service.