I think both logos are successful because they are simple and are advertised all over the world. Both logos

don't give any clue of what they are selling. If a person had never seen the logos they would have no clue

what they are selling. The Nike logo gives off a powerful strong emotion. It's as if the logo was just telling you

to go do you sport by the simplicity of the logo. The McDonald's logo give me a greasy, and good food

after a sport type of feel. It also reminds of the groggy feel, you experience after you eat the food.

Nike

http://www.google.com/imgres?q=nike+logo&num=10&um=1&hl=en&rlz=1G1SNNT_ENUS374&biw=1366&bih=643&tbm=isch&tbnid=zozQySjHizq8uM:&imgrefurl=http://www.famouslogos.org/nike-logo&docid=pIFnq7qKzN60fM&w=430&h=150&ei=RJiQTtK4OMOUtwfE1sSLDA&zoom=1&iact=rc&dur=145&sqi=2&page=1&tbnh=54&tbnw=154&start=0&ndsp=21&ved=1t:429,r:0,s:0&tx=107&ty=51

McDonald s

http://www.google.com/imgres?q=mcdonalds+logo&um=1&hl=en&sa=N&rlz=1G1SNNT_ENUS374&biw=1366&bih=643&tbm=isch&tbnid=CugwA7gmhr8FcM:&imgrefurl=https://woodward8.wikispaces.com/mcdonalds&docid=CgkRuPna0BszcM&w=913&h=875&ei=YZiQTvjwF9C4tgfG4PiJDA&zoom=1&iact=rc&dur=504&page=1&tbnh=128&tbnw=134&start=0&ndsp=21&ved=1t:429,r:3,s:0&tx=42&ty=32