I'm usually using the 'save' button on reddit or the 'favorites' on HN. If it isn't on either of those sites, I'll then try to submit it to the appropriate sub

I'm usually using the 'save' button on reddit or the 'favorites' on HN. If it isn't on either of those sites, I'll then try to submit it to the appropriate sub and save that. It works because I'm logged into reddit & HN on most of my devices. That said, I rarely look back at the stuff I've saved.