How to change ethernet MAC on Linux

# Run ifconfig by manual for changing HW MAC
rmmod forcedeth
sleep 3
modprobe forcedeth
sleep 30
ifconfig eth0 hw ether 00:40:63:DD:89:9E
ifconfig eth0 192.168.1.2 netmask 255.255.255.0 up
route add default gw 192.168.1.1

Google latitude service

Recently, Google announce my location service can be shared to friends you want to him/her to know your location. This is very great service to bi-direct GPS add-on service.

Detail info, see http://m.google.com/latitude