Why no listing in "Recent Posts"?

Many times now I've posted in the art section about films and movies and I go to the recent posts page and see no listing ...how come admin...?
yet other posts in the more popular area as politics or toke an talk are constantly listed ...

how cum...?

ps 'ere

https://www.rollitup.org/t/the-culture-high-2014.862569/#post-11367229

because it isnt a recent post. it needs to be recent and have replies. the rest of the forum moves really quick

It popped up in new posts..thats how I found it

Ding!!! ...the penny dropped

thanks guys