Good posts, futureK and Steven.
The internet is a very ripe place for exaggeration...
Just last Saturday I schlepped over to a local field for a coach's private lesson because: (1) the coach is a friend (2) he has been working with a 16 yo pitcher who wants to make the JV->Varsity transition in 2009 and (3) the coach wanted this kid videotaped and gunned so he will have "starting point" data.
Mechanically speaking the kid had some problems but they weren't the worst I've ever seen. Notably, he appeared generally to lack self-confidence (maybe he needs one of those titanium bracelets...).
Unless my coach-friend is a miracle-worker (we'll see), this kid has got a real serious challenge ahead of him--he didn't break 70 mph with his fastball from a well-groomed JUCO bullpen mound. He was close, sitting at about 69 mph, but that was a bit of a surprise.
The coach was even more surprised when I gave him the gun readings afterwards--he was "eyeballing" the kid's fastball as low-to-mid 70's.
Before guys here at LTP start diss'ing that coach for making poor guess-timates, recall that highly skilled hitters usually cannot distinguish between a good pitcher's fastball and his changeup. If they could, they'd probably hit 'em more often...