Just noticed today that users cannot track a category easily from mobile view. I can understand why, but perhaps this should be given some additional thought.
We have currently switched to category view for our homepage, which provides a more logical structure for browsing our site. However it does make it a bit complicated knowing where the new topics are. Interrupting the sitemap experience with a few random topics out of context does not really help in mobile view.
My first thought was that each category should have some indicator that there are new topics since last visit. But I can imagine that would be a heavy query.
Then I thought that we should really be encourage users to track more so that they can get notifications of new topics. However I realize now this is not as easy as it sounds for the user.
Anyhow, just wanted to share a view on this. Still on the experiment on category view vs latest view and no major difference yet in terms of usage that I can see other than a drop in private messages strangely (perhaps due to a lower pervasiveness of avatars)