The ability of being able for us as store owners / managers in different locations around US/Canada (including Hawaii), be instantly notified when an item becomes out stock allowing me time plan my next trip! I can log into our website at home base office via computer & mobile devices remotely check status without having physical visits each week which saves alot og man power costs with less employees needed - we are more efficient now due its simplicity!! Nothing so far but would like better notification options if there's something wrong within system such things could let you know right away rather than waiting till your online visit again after few days etc.. Would love this feature instead of emailing customer service every 3rd day asking them whats going down :).