I get the concept, but on a purely personal level, I just didn't find it all that fun. Please read on.
The timer didn't lag... and neither did the spacebar. Not always easy to do, so you got points for that.
Great practice if you are looking to be a timekeeper at track and field events or a similar venue. But I'm not sure this usefulness will register with a lot of the members here or not.
Now, if the object was to stop the watch as a thoroghbred horse, or a racecar were crossing the finish line, that would add playability to something like this, however this is my opinion members may or may not disagree with me.
I like the scorekeeping and having the competition factor in there... competition amongst a very large group with global stats is always a good thing.
Perhaps you are onto a new type of meme or genre, as there really isn't much in the timing genre not dedicated to hitting a golf ball or hitting some sort of field goal... I guess this could be considered a raw form since the interface is numeric instead of graphic.
Good luck.