The ability for users of different skill levels have access from any device with internet service. It was very beneficial when we used it in our school district because students who weren't as tech savvy had no problem registering online using their phones or computers via WIFI connections at home/school etc! I honestly don’t dislike anything about this software-it's great!! If you are looking into purchasing bird ease please do so. There aren't many things that bug me but if there were something i would like solved better than everything else they got right first time around :). Make sure your organization has proper IT support (i say "proper" bc sometimes schools dont know how good all these programs truly ARE) Otherwise be prepared for additional training costs which can add up quick without knowing what you're getting yourselfs involved w/.