We have four HTC Desires in the house which we have enabled for location services through Google Maps. In a recent maps update pinging a friend to update their location became available however recently this has stopped working even though sharing settings are unaltered. Confused as the device states that the friends device or maps version does not support the feature. We are all on the latest version of maps. Any thoughts....?

I've noticed that my friends are no longer updating - I see friends who haven't updated in a year or more, and those who I know should update, haven't. For example, one of my friends is shown as being somewhere yesterday, when in fact he hasn't been there since last week.

I wonder if this is related?