What I'm about to point out is so small but, I can't help myself. It may not even matter or it may be because it's intended.
On the "forums" Tab page: We have General Forums, Gardening, Plants, Regional Gardening and Not Exactly Gardening.
The "New?" column's width seem to be exactly the same width in all categories.
None of the other column widths align with each other except the Last Post (date) column of Gardening and Plants. The same is true of The All Things Plants page.
I'm a really, really visual person but do not judge these sorts of things. They don't matter to me personally, it's just something I notice.