There is already a feature, 2 sort features actually: sort by 'hot' and sort by 'active'

Thank you. That did the trick 🙂

I can confirm this mark post as read after viewing post image/link is not working in version 1.0.88.

Uodate: In version 1.0.88, mark post read after viewing image/link is not working.

Long pressing comment is the only thing that will collapse comments. Is that how it is intended? If not, how do I collapae comments with a single tap?