Well the homepage could do with a bit more content on it images etc, im not sure about the colour scheme too. Also if you're struggling to get many posts in each forum i suggest cutting down on the number of forums untill it looks impressive i.e they have 100's of posts in each them exapnding with new forums gradually.
digi duck is right about having too many forum threads to start with; you currently have 50 members - ask them to spread the word, and eventually begin adding new forum threads as you grow.
