Issues Geni is aware of and working on correcting:
Map Geocoding Issues
Birthday reminders not changing according to selected family group in personal settings. Users are reminded via email of third cousins and closer. http://forum.geni.com/topic.php?id=1889&page=3#post-11687
To tag someone outside your Family and Friends, you can use their Profile ID. For more information see our Photo Tagging page.