Waterproof keyboard from Lenovo

First we have waterproof cellphones, and now waterproof keyboards? Lenovo showcased a waterproof keyboard that is compatible with any PC workstation, and this bodes well for those who have a tendency of knocking over their cups whenever elbows are in the vicinity. It does boggle the mind, though, where a spoilt keyboard could be easily replaced by another for around $10. Is the investment worth it? After all, spilt coffee might not spoil the keyboard, but it sure will leave some unsightly marks across the all important WASD keys (to FPS gamers, at least).