Yeah -- when I dow load pics from my camera, they are usually 7 meg (which is big). So if I am going to use them via a post or send them via email, I reduce them in size... that process is easy -- just a couple clicks. I also think depending on your camera, you can change the size on your camera. If you use a digital camera and save the pic as a RAW pic - these can get up to 15 meg.
Hope this helps!!