I've been making use of it for about ten years at this point. I flooded the old keyboard, which caused several of the keys to become unresponsive. I was confused, but I went ahead and purchased two more of the same thing. After ten years of virtually daily intensive use, some of the buttons started to play about a little bit, and some of the letters faded a little bit, but if there hadn't been a brand new one to compare it to, I wouldn't have recognized the difference between the two versions at all. Perfect for people who want a notebook keyboard that is both portable and comfortable to use.