Separate names with a comma.
Don't know much about Latitude but try checking out the website and see if that helps.
Google Latitude <-- sounds like it may be what you want (or don't want rather).
Look at this link.. (well it wont show the link so just google it.. google/latitude It keeps a map of where you...
How do I use Latitude on my phone?
Latitude allows you to see where your friends and family are on Google Maps™....