Following on from the recent thread "How fast are you";
Looking at a bunch of online typing tests & tutors prompted me to think that what I'd really like is a keylogger (yeah privacy stuff, I know) that builds statistics on my typing from precision timing letter to letter.
Specifically, I'd like it to be building a personalized per-word count plus detail of errors, hesitations etc and from that work out what are the most costly flaws I could improve on. Not just at a whole word level but also issues within and between letter groupings. Then have some exercises that focus on the most profitable fixes.
Learning to quickly type a long complicated word doesn't help much if I rarely use it. On the other hand a simple word that you type pretty fast might win you more with only slight optimization if it's needed frequently.
I don't want practice typing Alice in Wonderland, I'd rather something that focused on what I personally actually type.