I am going to start doing a design/illustration a day on my Tumblr http://boomrocker.tumblr.com/
There is a difference in a core logo and a treatment of a logo. Also the color usage (Ie: t-shirt spot color print versus CMYK full scolor screen printing).
I present a mark I did a few years back that I stumbled upon for a corporate giving campaign. It shows the difference nicely of logo pahses, treatments, and color depths.
Take notice how the plane changes per the need in the logo artwork to best signify action for the logo usage.
The Avatar rush has begun again! The first batch will be for those who attended CPCon for the Control Point Podcast community (a podcast about TF2).
And have a great new year!