I have been following Zac Sunderland's progress (16 year old on his solo sail around the world) and I was actually glad to see that he has stopped reporting his exact position as he will be passing near some locales known to harbor a few unsavory characters. It's a shame that you have to think about such things, but I am glad he is taking the precaution. I am sure the people who need to know the specific location do know it. Just the likely next stop and a rough estimate of arrival are all most of us really want. His blog is good reading. He really seems rather down to Earth about the whole experience, gracious and grateful and an outstanding sailor.
Zac's Blog