I think there are more than enough ways out there to make sure I only read the news I want to read. Some sites I read to make sure I am seeing other things out there I may not know I should read.
Not saying this is bad so much as that I would hope it doesn't catch on...
For me it is more a tool that I would use once a week to make sure I didn't miss anything I wanted to see that week on HN. The alternative is reading every headline multiple times a day and this isn't always feasible.
I think there are more than enough ways out there to make sure I only read the news I want to read. Some sites I read to make sure I am seeing other things out there I may not know I should read.
Not saying this is bad so much as that I would hope it doesn't catch on...