The New York Times’s Jenna Wortham raises the question: if you have a GPS-equipped smartphone, do you need a standalone GPS unit? And what will the near-ubiquity of GPS on smartphones do to the standalone GPS market? Wortham looks at the pros and cons of each option. Personally, I think the answer depends on how much GPS you need: some people with general needs will be happy with, for example, how the GPS works on the iPhone, especially since so much software can be written for it. But some people have more robust needs and will need a purpose-dedicated device.