Really loved sync, and on principal have quit reddit. I don't know if it does anything, but when I need search results from reddit I view the Google cached version instead.
Looking forward to sync for lemmy (I NEED a read-on-scroll for lemmy, I don't know how everyone else is handling it).
Sync would mark posts on reddit as read when you scrolled past them, even if you didn't read it. Paired with hide read it let you keep viewing content you hadn't seen before. Here so far I just skip a few pages in and hope for the best.