A degree of trial and error is necessary here to determine the ideal size. I would suggest you resize the image down to 75% in photoeditor, until you have a size you are happy with. This can be a shade laborious, so look at it as a learning event. Keep going through this loop, resizing, uploading to photobucket, then reposting your link, until you are comfortable with the final size. If you now examine the size of the image in pixels, then this is your target size for future images. For me this is about 500 pixels wide. Hope this helps ... :)