Pretty cool. You might add a counter to keep track of how many breaks you have taken, since you usually take a longer break after every four short ones.

I think I would steer new learners of SE Asian scripts away from Cambodian as a first language to learn. Cambodian, while it is a beautiful script and has more-or-less regular pronunciation, also has a few odd exceptions, and complex vowel pronunciation rules. The consonants are divided into two groups, and many of the vowels are pronounced differently in the first group than in the second. That said, after learning the Thai script, Lao and Cambodian were not too hard. Either way, they are all great languages to learn.

Actually I am almost certain Thai and Lao have those consonant divisions as well, in fact I believe 3 or 4. If I am not mistaken they are still taught and are part of the tone system and/or can affect unwritten vowel selection. More certainly, the consonant classes somehow stem from the need to preserve pronunciation of Pali, a middle-Indian prakrit language (with features not present in these SEA countries' modern languages) that is used as the littoral language of Theravadin ("older school") Buddhism. See http://pali.pratyeka.org/ for more info on that.

A vi editor mode would be sweet!

It kind of makes sense. It makes the timing more accurate by preventing late starts caused by different people starting typing at different times.

Just make it start counting at the first matching keypress. Problem solved.

Didn't he say that he was pursuing his "dreams of being a startup co-founder"?

Yes, of course that's enough, if the team/market/idea/timing is right.

The praise was just so effusive it sounded like many of the aspects that make being a founder attractive – autonomy, creativity, and impact – were still being well-provided at Google. I'll be interested to see the startup he builds, when it de-cloaks.