Just how twitchy are you? Type the letter K then L alternately as many times as you can in 15 seconds. GO!
When Elan did the Most Keystrokes in 15 Seconds quiz, they wished for a version with no upper score limit. That way the full distribution curve of possible scores appears, rather than simply awarding the fastest 9% with a 100% score. So, here it is!
This is a test of your finger speed, so keystrokes must be manually typed
I think I could max it at 250 without cheating.