it's an internetequitette to resize and compress the

pictures before posting. This way people don't have to wait for ever for them to load. 800X600 usually works best for most people. With any camera, you still need to do the post processing (at least resize and compression I mentioned above).

照片越好，字节越大. This is true when you are comparing apple to apple. A 4mp Nikon D2H can still blow a 8mp point and shoot out of the water. This is because not all pixels are created equal.

想买个500以下最好的数码相机. Take a look at Canon S2/3 IS series. They are pretty good. That's what I would use if I want a compact digital camera.