Recently, I have observed that some of the forumer have used signature that are quite big. eg. 1024 X 768 or 800 X 600 pixel..Standard size of picture taken by camera are as follow:-1. 1024 x 768 (High resolution)2. 800 x 600 (Normal resolution)3. 640 x 480 (Low resolution)4. 340 x 240. (video format).I have used a 400 X 65 pixel (after photo edit and cropping) in gif format. It does not used up too much vertical space and memory but at the same time it create the effect that I want... So what is the optimum size your signature should be..without :-1. used too much vertical space.2. band width or memory (especially for dial up)3. horizontal scrool button enable to squeeze the picture along the breath of this forum to read the thread.