Originally Posted by Jean=A=Luc
As Olauwers said it's simply turtling. "Micro" typically refers to personal and detailed control of your units (instead of just using attack-move) in order to maximize their effectiveness. There are other types of micro(management) too.
You can read more about it here:
aha, well that i do too.
but yes im not proud of it, but im a turtle
. let them break on my walls and then lead a countercharge.