Just one little anecdote for old times' sake. I used a sequential dialer to scan for interesting numbers in the country capital. After hitting one particular number the phone to which the modem was connected rang. This was before the days of anr indicating that whoever backtracked that number in less than a minute had quite a bit of pull. The guy on the other side asked me what we were doing calling that particular number. The phone actually felt hot in my hand and I realized: Busted. So on the spur of the moment I said I was trying to connect to a bbs and he said 'don't call this number again' and hung up. I was still shaking an hour later.