I have been thinking a lot about how to implement a categories type feature. Right now the closest thing is "Filters" which allow you to basically follow keywor

I have been thinking a lot about how to implement a categories type feature. Right now the closest thing is "Filters" which allow you to basically follow keywords and customize your homepage based on what text appears in the headlines. Kinda like Google News alerts. Right now, I'm thinking maybe it would be good to add tags to stories which would reduce some of the problems with filters.