[BBNZowner]

I'm also against the landing page on your forum - they can be useful, if used correctly like tbworld said. But to be honest, I wouldn't bother reading that block of text as a user. On my monitor it just looks like a boring paragraph so I'd skip over it. If you're going to keep it, maybe consider a redesign.

I agree that the current logo is too large. It means on a big monitor you've got a huge amount of empty space to the right side, and on small screens it will take up a big section of the screen space. Maybe try reducing it in increments: reduce size, upload, see how it looks. Rinse and repeat until you find the size it looks best at.

Other than that, I'd personally try organise the forum sections a bit better. For example, the two forums in "Drug News and Society" could actually be condensed into one forum. Just move all the existing threads and posts from one into the other, and rename. This will have the dual effect of making it look more active. Then consider joining the forum to an existing category.
Currently it is all split into heaps of chunks, and you have to scroll down a while to reach them all. Try condensing categories and sections where possible. Just note this is more of a personal preference so consult with your current member base before making any drastic changes. Some people don't mind it either way.