I had not heard of T9 before starting the project and getting interested, I'm too young to have experienced owning a pre-touch screen phone. I don't know if the average HN reader knows what T9 is, so I went with a term that I was fairly certain most people would be familiar with. Is that so people engage with my work? I certainly found the project fascinating, I made the library to share that fascination. If I can get more people to implement and use T9 and alike systems I think my work has has been a success.