Hey i was modeling a head in maya. And i came across this idea of mine
What i did was i had one quad, i cut the face into 4 triangles, deleted the tri's and added a new face in the hole (see image below). This way i got more geometry to work with. But I'm worried if this is a bad thing to do or not.

The mesh would look like it did before if i chose all 4 vertexes and merged them together.