I've got a specific use case that's not applicable to most HN readers - here in .au Popular Science links are useless - they do a geo redirect based on your ip address, which redirects me to the homepage of the .com.au version of their site, which in general doesn't even have the original article available...
I don't really want to write RES for HackerNews, but it's an interesting project for the last week of my holidays.