I saw some discussion on it - i think in the newsgroups when they first stopped posting the info.

It had to do with the inaccuracy of the fault and location - when they say 2 miles North of the San Andreas a lot of people mis-interpretted it to mean it was ON the San Andreas (or whatever fault)

The best the computer can do is identify the nearest fault to the quake - that doesn't always mean it is the actual fault that is involved - it could be a new one like in the case of Northridge - it was on a previously unidentified fault. So they quit showing the nearest fault on most text messages.

Canie