Two people were talking online and decided to exchange pictures. He then took a picture of himself which we the viewers got to see him do. After taking the picture and putting it on his computer, he added a full head of hair, removed his beer belly, slimmed down his face, put himself in stylish clothes and sent the picture. We then finally saw the woman who in turn looked nothing like what her computer image made her out to be. This could be very dangerous in the long run of things.
People get a false sense of reality believing everything they see on their screens.
If people have too much trust, they can be hurt by having a online relationship that they find very honest and open, and come to find out that the person they are confiding in will probably not look like they imagined or may even not be the sex they had been believing in either. While changing ones physical image is probably the most common thing to do to your online alias, another way to change yourself is to change your emotional state. This could actually be very therapeutic for someone dealing with a low self-image. Someone who may find themselves unattractive, either physically or mentally, can change the thing they find most unattractive, and therefore have a lot more self-confidence. By being able to change the thing you find most unattractive in yourself, you will be much more emotionally stable for the time that you are in the matrix.