I usually hide things in 'I'm on' after a while, if I'm not going to return to a thread or it had naturally tailed off. I like to keep the section tidy. The past few days every time I select 'I'm on' its showing up threads I have long since hidden and i am having to remove them again and again. I know it's not a huge problem but it's irritating for me as having too many threads in a list means I often miss updates and they sometimes don't move to the top when posted on.
I use the app on iPhone.