One of the major problems with the swipe right from the home screen is that if you use the search bar as a general web search function it's more likely not to work then work. If you're search term doesn't pull up anything in your emails your apps or your other Spotlight search areas then the correct function should give you a choice to search the web for Wikipedia and that's just not working consistently. I have to keep the Google search app on my home screen for this purpose
