[itsoktocry]

>lets a group of likeminded individuals flag and filter out for each other HN submissions

Yeah! You can call it MyEchoChamber or something.

[causi]

Any discussion system that allows users to hide comments by downvoting them inherently trends toward being an echo chamber. I invite you to voice an unpopular opinion about one of HN's sacred cows and observe how fast it hits -4.