@mferrier Every time I read "nanocopters" I'm then disappointed to see they're visible to the naked eye.
Those little iTunes Store arrows seemed useless until I learned that ⌥-clicking makes the link work within your library. I use them most often to jump from the full library to playing a single album.
To make the links internal by default (with ⌥-click going to the iTunes Store):
defaults write com.apple.iTunes invertStoreLinks -bool truepreviously: Finally