It's called cursive writing.. that's how you write a fu*kin "O"
edit: and these are more about logo design.. things like baskin robbins cleverly adding in :31: to their logo to represent the number of flavours isn't really a subliminal message.
Whoever wrote this sh*t didn't get to post secondary..
it is subliminal...they advertise 31 flavors... so when you see the logo it appeals to your subconscious... its a form of subliminal branding...
Its not that its going to make you want ice cream...