This picture shows the different logos that companies use. In the 1950s companies began to find it important to have logos. Having a logo helps people remember the company better. http://visual.ly/history-logo-design
Neville Brody, coca cola design, a design advertising coca cola in where he has used the outline and shape of the coca cola bottle to make an almost optical illusion/psychedelic pattern, i like this piece because it is eye catching and simple without losing what the advertisement is about and can clearly be recognised as the coca cola brand.