Re: Strange emails? "Tracking" down?
Read on web that when a computer with P4 is used, the computer has a unique identifier. So it doesn't matter what operating system is used it is the hardware or motherboard chipset that broadcasts the ID of the machine.
Another example every machine has a MAC no. even a Palm organiser: 00000E0000000 - note substituted certain numerals for 0's. The above I took from the MAC number identifier on back of Palm Tungsten C organiser.