Most business people would like to see and know who they are dealing with, and to ensure that they are not dealing with a robot.
Your photo on SFI does a great deal in selling you and your business, because it portrays a lot about your personality and carriage. A good photo has to be of full face, preferably without hat or eyeglasses. Ladies should have a neat/good hairdo preferably without anyof those excesses that will tend to hide the facial features.
