I'm talking about the normal website.
If I go to 'Credit Cards and their Loyalty Programs' forum then the column on the far right contains a link that will take me to the last unread post. For 'Current Credit Card Promotions' this is currently a post about an Investsec credit card. So I can easily get to the last unread post about Investsec.
If however I'm more interested in posts about the ANZ Platinum credit card I click on the 'Current Credit Card Promotions' sub forum link.
Once on this sub forum page I see no link that will take me to the last unread post for any of the topics. So instead I end up clicking the 'go to last post' link and scrolling up. If the topic is hot I'll often have to click back a page or two before I find where I'm up to in the thread.
Not a fatal flaw obviously, but would be nice to have the 'go to first unread' option when in the 'Current Credit Card Promotions' (or any other) sub forum.