I agree with this. The app definitely feels it escape earlier than it should have. I have worked in this area for a few years, albeit with news sites, and mobile devices need a different approach - this still feels like it is using a big screen approach and crushing it down.
Some general thoughts:
- The content space is *much* smaller than it should be, and the workflow needs rethinking. You are selling ads but it shouldn't look like that is your primary intent (even if it is as we all have to make a living

)
- The controls like the back button, pagination, etc. should get out of the way when it's not needed, look at the NYTimes app for an example of how this should be done.
- For me the ads turn up some distance before the content and that is just bad psychology at several levels and really should be fixed.
- The ads then just sit there taking up screen space. I would suggest they foldaway after the viewer has been on a page for a while but that might not be workable on a forum where the content isn't as dense so the reader moves faster.
- Lose the poster sidebar and move that information elsewhere.
- Likewise the topic header. Do people really need to know what the topic is once they start to read it? The sense of the original topic seldom survives beyond the first page anyway.
I understand that the app is a work in progress but purely from a usability point of view I think it has a long way to go (I am aware that this is all personal opinion). I suggest the designers go away and look at news content sites (ok - I'm biased

) to see what can be done to maximise the real estate while maintaining advertising space and usability. The underlying engine may work happily but as it stands most people are not going to get past the layout and design.