I don't really care what you call it. Sure, it's a lot like the sticker on the car window, but it's like business hours or a menu on a website--these are specific things to get me engaged and trivial things to let me kick the tires on a project.

If it's a UI toolkit, I'm not going to download, grab dependencies, and compile it, mock up a basic app just to find out it's the not something I want.