This is a Reddit problem as well, even with notifications. In a regular forum posts that are replied to are automatically "bumped" to the top, thus a thread can

This is a Reddit problem as well, even with notifications. In a regular forum posts that are replied to are automatically "bumped" to the top, thus a thread can go on for years. Whereas here even a popular discussion gets buried to the bottom after a day or two - for better or for worse.