Smart collections: Automatically categorize pages into collections.

Categorize pages into collections using

Allow us to specify rules to automatically group existing pages/incoming pages based on certain keywords.

I’m less intrigued by a machine learning approach to this than a way to define filter rules for automatic tagging/categorization/automation, much like gmail has. A ML-backed dynamic rule creator could be built on top of that, but based on my experiences with google’s own attempts to decide automatically what is important/unimportant, I’d say it’s much easier to get good results by manually curating some rules.