I posted to reddit.com

stuartcw on How to Drastically Increase the Life of Your Shaver Razor Blade Cartridges or Disposable Razors

http://www.reddit.com/r/Frugal/comments/ax61r/how_to_drastically_increase_the_life_of_your/c0jvlg4

Also stop using Shaving Cream and move to a shaving oil. The oil on the blade will help prevent it from rusting. Also, for me, Shaving Cream is the only can than rusts in the bathroom. Why? I bet they put salt in the Shaving Cream to make the blades rust so you have to buy more of them.