I like your slogan.
I also think that you should experiment with your colors slightly. The tines just don't seem to go very well together. Perhaps you should use the shades of blue that are in your header image.
Another thing to consider is the number of forums you have. Now, I know it's easy to dream of all the forums you eventually want to have so you put them up right away. The problem is that people don't like to post on empty-looking boards. I would consolidate some of them now, and then as your forums get more posts in them, add more forums as different topics become more popular. For example, "Everyone Needs Knots" currently could easily fit inside a "Techniques and Equipment" forum.
