Do you have any specific suggestions on how to UI? Small tweaks would be most appreciated as I could implement them before the upcoming Show HN post.

To answer your questions:

1. The list of all feeds used by LinkLonk is not publicly accessible through the website. They are feeds that users explicitly submitted through https://linklonk.com/submit or feeds that LinkLonk parsed from the meta tags of the links that users submitted.

2. The number of active users has been about 4 for the last few months. I'm hoping to get it to 10 this year.