I've been using this to follow some users whose comments I respect, and it's been a great improvement from loading the hn user comments page all the time. I imagine this is more valuable for startups and marketing managers, but it's been useful me the average hn addict as well :)
Feedback:<p>- Autofocus on input field in modal windows after clicking "Follow a new HackerNews user".<p>- Remember my checkbox selection in the same modal window<p>- Favicon!<p>- Autofollowing e.g. "pg" could improve onboarding<p>- Design is not very content focused right now, I would probably switch the middle and right column<p>- Highlight found keywords in comment text<p>- Notify/show me if someone replied to one of my comments<p>- Modify title depending on what is shown (Right now following.php always shows "HackerNews users I follow" even when I have selected a specific one)
I've been using it for the past week and it's great.<p>If you wish to get alerts for your brand and receive the HN link while it's hot it's the perfect tool.