That link... ah, James Macintyre. The posts below his over there pretty much spell it out. Internet crackpot, waste of time.

Physically searching for a body is not really productive unless you have leads. Especially this long after the event. If the kidnapper had a hole ready in a remote area, for instance, and it wasn't searched timely (like, more than 15 years ago), that's an impossible search. And that's apart from burial in water or concrete, cremation or quicklime.

Not to be macabre or disrespectful, but you know the sign at Wendy's in MC in the 90s? Something like "Find Jodi . Try our chili." You've got to know where to look.