I know this Thread is very old but for the sake of other people coming across it,
another use I've found for Vertex Face is to find accidental extrusions.

I sometimes have a problem where I'll accidentally extrude something and do nothing with it and when I try adding some edges it won't let me because there is something in the way.

Using VertexFaces, it allows me to see random "Edges" between faces that aren't meant to be there, so this way I can fix it a lot easier.

Originally Posted by MrTrumpCard