Problem with caller ID
is that half the calls I get to my regular phone don't seem to have ID'able numbers. They aren't anonymous - of course I ignore anonymous calls on principle - but they're "number unavailable". I think telemarketers are pooling in the locations in the country that don't yet have caller ID capability.
"Beware of bugs in the above code; I have only proved it correct, not tried it."
-- Donald Knuth