All maps and apps in ArcGIS Online have URL's that look like this: http://organisation.maps.arcgis.com/apps/Cascade/index.html?appid=8201877db6184050808c3334ad019c99
It is obviously too long and user-unfriendly. There should be a way to edit this URL to something at least like this: http://organisation.maps.arcgis.com/apps/Cascade/Presentation-GIS-benefits-for-your-company
The simplicity of app's URL is very important then there is no way to share that URL like hyperlink and users have to write it manually. In addition, this is very important for SEO purposes.