For example, the forum main page with needing to mouseover to get forum descriptions. That one seems to only make things take longer (reading the descriptions) vs. being useful. In my opinion, a better way would be to have the descriptions show for all forums without needing to mouseover, but then with a small description toggle for the page (clicking it would fade out all the descriptions and collapse the page to how it is now, clicking it again would do the reverse). With the user's preference being saved of course.
In the end, it seems something like that would make finding the forum you are looking for (based on description) more efficient/quicker.