These templates are specifically designed for using with your resources on ArcGIS Online as opposed to ArcGIS Server. (i.e. you supply a web map ID, as opposed to URLs to your GIS Services Directory).
In particular I found this awesome template, that ticks all the boxes for me:
- Mobile support (e.g media queries, responsive design)
- Share to social media
- Nice looking layout
- Built in Geocoder
I have already put together the bones of my application in a basic dojo template, but its the stuff mentioned above that I need to also include in my web application.