I don't like the idea of separating them. All three have enough commonalities and shared issues that they should be kept together. If someone has a problem with their machine and the answer isn't in the forum for that machine, then they have to browse two other forums to try to find the answer they need when they could have just browsed through one and found it straight away. By separating them, you will have to have posts in each forum addressing the same issues for the convenience of owners of the different models. And once you separate them by model, you'll be expected to separate them further, like 15 inch Macbook Pro vs 17 inch Macbook Pro or nVidia graphics vs ATi graphics or white/black Macbook vs Aluminum Macbook. It is just wasteful of hard drive space to separate all the laptops and will complicate forum maintenance. The only separations that should be required are 68k (for the vintage fans), PowerPC and Intel.