Interesting post, akkartik. I still use Google Reader and continue to enjoy it so I guess I haven't subscribed to as much as you had. I agree HN and Arc Forum give more focused subjects and primarily rely on Reader to keep up with version updates, and new blog posts by people who I follow who don't have regular new post patterns. That primarily saves me a long list of visits to different places only to discover there isn't any new.
Is readwarp.com something you set up? It looks good.
Yeah, old-timers here know I like to talk about readwarp :) I built the website in arc. (The feed crawling pipeline is in python, primarily so I could use BeautifulSoup.)