10 years ago we calculated downtime at $100k/minute for the homepage. So when you tried to do an ajaxy thing on the home page and messed it up, even after testing, you had to write an email that calculated how much theoretical money was lost.
And sure, there's some elasticity, but an approximation is handy.
I have been absolutely delighted with my Pebble. Most new tech is underwhelming, but Pebble+Android is a fantastic combination. I can see incoming messages without being obtrusive.
The battery life is impressive too. I put a different watchband on because I hate the feeling of silicone, but it fits my skinny wrists decently.