The NTP Pool project that I am looking after had a story on Slashdot and another 50 users turned into members of the pool. Yay. We are getting close to doubling the number of servers in the pool since I started running the system.
We can still use more servers though. My best guess is that the number of client computers is somewhere between some hundred thousand and a few millions!
What looks interesting is that there is a constant flow of ntp traffic to the ntp server from clients who uses servers in the pool.
I think that there are more than a few million users who are using the service.
Best part about the story the fun tales.