Hidden message in goodwill logo.

 The company is aimed at 16+ and for people searching for jobs the logo represents smiling face which shows high customer satisfaction.
The smiling face also stands for a G which stands for the G in goodwill.

hidden message in formula 1 logo.

The negative space creates a 1 and the red lines makes the writing look as if its in motion.

Hidden message in eight logo :)

Each of the letters in this logo are made up of a part 

of the number eight and also spells eight 

the font is very appealing.

Hidden message in amazon logo :)

The amazon logo has two hidden messages.

The arrow is pointing from A to Z meaning that they have everything for A to Z and the arrow is also used as a smiley face to show that they have high customer satisfaction. The font and colour is simple, this makes it recognisable.