Earlier quoted context omitted.
not sure how many modifications were made but the About page states: > Paperkast.com built on lobste.rs open source news aggregator system.
Funny, years ago a friend and I were trying to make something exactly along lines of lobste.rs but for scientific papers. https://github.com/seltzered/journaltalk was as far as I got. Didn't get very far due lack of motivation and other parallel projects, but it's been neat to see things like this (and fermat's library, and peerpub, etc.) spring up over the years.
I know how you feel- It's always rewarding when you worked on something but never finished it- you knew it was a good idea when doing it-- then years later someone else does something very similar. No anger from it, not like they stole your idea- it just validates that your original idea was so good that it was just a matter of time until someone else did it. Makes me feel all warm and fuzzy.