What is it used for exactly on the 21"? At that size?
1) Front facing Logo.
2) IR receiver.
3) Ledge for edge to edge glass/display to rest on.
4) Allows for internal space to be larger (something very much lacking on the 21.5" model).
5) Aesthetically pleasing.
Attempting to do no more than two posts per thread on weekdays (for now).