A reader asks…

I am looking for a personal finance website that can link all my accounts for a single view. I read about one months ago that had a community feel to it wherein people categorized their transactions and then the system learned and could match similar transactions across the community – i.e. you tell it that Kroger is a grocery and it will categorize my Kroger spending as grocery.
I am looking for a simple site that is free and can bring some value other than just aggregating my data to one location.
Any help is good help – thanks in advance.