What do you mean? You fire out the "detonate" command on the frequency used by Hezbollah - only pagers connected to that network blow.

It's statistically probable you'll overwhelmingly damage terrorists. Sadly collateral damage is inevitable in war, and this is far more precise than even a laser guided bomb.

Carpet bombing is a large area bombardment done in a progressive manner to inflict damage in every part of a selected area of land. (From Wikipedia).

In what way does the pagers attack resemble covering an entire area with a carpet of bombs?