Funny you should bring up "gas stations" - what do you think the impact on America would be if 20 gas stations were blown up every day? To a lesser extent, what if every 7-11 stopped serving coffee one morning?
I rely largely in my common sense - which can be wrong from time to time - but all in all, it has served me well :)
Changed my mind, add the 7/11's to the list.. life w/o coffee? meaningless!... :) I need coffee to function at all. But seriously, what does common sense tells me? ah... I give the terrorist more credit than that. Whatever next hit we get from them, it has to be BIG, as big as they can manage, right? (we know what happens when they give their identity away)... 20, 40 gas stations in fire? Common-sense says, Naaaaahhhh :)