Earlier this week, Google announced a series of improvements to Google Google Search to bring out the best quality and reliable content.
These include improvements to:
Ranking (worldwide and in all languages):
Google has improved its evaluation methods and updated its algorithm to bring out more reliable content through New Search Quality Rater instructions and ranking changes.
Comments and changes to autocomplete policy (Autocomplete) (worldwide and in all languages):
Google publishes the new policy in the Help Center so that anyone can learn more about Autocomplete and Google's approach to removing inappropriate search terms.
For those who want to delve into it a little more, Google recently updated the How Search Works webpage to provide more information to users and website owners for the technology behind Search.
More details can be found in the official Google announcement here.