, I agree, however, a defense lawyer would need to find prior art from before
the patent application date, which is 2004.
You mention Altavista, I was actually looking for Profusion, but your point is still valid (in my opinion).
Having said that, I disagree about a feature not being an invention. Suppose you invent a mouse trap (ie the world's first mouse trap), and you patent it. Now suppose I invent an extension to your mouse trap that rings a bell, I can patent the extension because I've had to research the right way to make a bell ring given the amount of energy available, good audible frequency etc...
Your mouse trap is an invention. My bell is an invention, and it is also a feature. We are in a deadlock here: both of us want to make better mouse traps, but you can't use my bell and I can't use your base. Unless we grant each other permission (ie a license).
Then it becomes stupid when a third party comes along and says "well, I invented the spring" (ie your wheel argument) and shuts us both down.