> Each of the scenarios above can have both a qualitative activation goal, as well as quantitive results to make sure it’s really happening. Whatever you do, sending a shitload of spammy email notifications with the subject line “We Miss You” is unlikely to bend the curve significantly.

> I hate those, and you should too.

For this reason, I hope he's right and Android developers pay attention. Sometimes one upvote is not enough.

Alas, I expect that by the time you're in the long-tail of that curve, you have simply nothing to lose by going the vexatious notification route.