On Mon, 17 Aug 2009 11:37:35 -0700, David Nebenzahl
wrote:

So why shouldn't I use them?
Keep in mind that I use this service *at most* 3 or 4 times a *year*.

I use 8 hours, which guarantees at least one update during working
hours.

You're fine, but there are NTP abuse problems among application
writers and device vendors:
http://en.wikipedia.org/wiki/NTP_server_misuse_and_abuse

Since there doesn't seem to be a way to stop someone from flooding the
NTP servers with excessive requests, the SNTP group came up with the
"kiss of death" packet, which tells the sender to shut up:
http://tools.ietf.org/html/rfc4330#page-20