Krug - 3 points and question

1. Don't be afraid to use conventions.

2. Three facts about "real-world Web use": 1) We don't read pages. We scan them. 2) We don't make optimal choices. We satisfice (satisfy/suffice). 3) We don't figure out how things work. We muddle through (22-29).

3. Five points in billboard design: 1) create a clear visual hierarchy on each page, 2) take advantage of conventions, 3) break pages up into clearly defined areas, 4) make it obvious what's clickable, and 5) minimize noise (31).

Question: When a designer invents a better idea, like the virtual shopping cart, does the designer collect any royalties from his/her idea? Can such an idea be "patented" or "copy written" per se?