I bought one, and shaved with it with the expectation that five blades would be just plain silly. Shockingly, however, it actually does shave very well. The Insta-Wife's verdict upon feeling my cheeks was that they were noticeably smoother than usual.
What's next? Will my grandsons be shaving with 12-blade razors?
UPDATE: Reader Dan Jacquemin notes that this is another case of life imitating The Onion. Heh.