Has anyone upgraded there account on NulledBB?

I was thinking about upgrading for more daily downloads but is there any other perks to make it worth it? It mentions "Premium forums" whats that? I thought I had access to all the forums on here already with the basic membership...are there hidden forums only for premium member? Then there's the question of what "Bypass unlock requirements" means...does this mean that I no longer will need to purchase credits to unlock links?