I have just installed Google Latitude and I am still learning how it works. My friend is supposed to be asleep?

but his "circle" or profile keeps moving. Can I be absolutely sure that this person is not asleep, or could it be a glitch in the system?



Please help me understand this as accurately as you can. ThxI have just installed Google Latitude and I am still learning how it works. My friend is supposed to be asleep?
WOW Are you a freakin stalker??