Click Like? You May Have Given Up the Right To Sue
They're different. You're actually signing (or clicking through) something with them. This sounds like they're trying to say if you like them on Facebook (no EULA pops up when you like something) that you can never sue them. This will never stand up in court.
A Brief History of Features Apple Has Killed
Just to pick a nit (I agree with everything else) but Apple didn't invent NuBus, though they were the only ones to actually use it. IIRC, it was invented by TI.