Cruising the innerwebs and just saw a teaser ad that admonished:
"Never throw away old knives. This device will make old and dull knives really
Had to click on it. First there is a dissertation on how many people feel that
their knife can only be sharpened a few times then it is “garbage” or else they
spent enough money on a knife that it never needs sharpening. Then it showed
one of those tools that you set on the counter and draw the knife through.