The average stack.

[BlibbityBlabbity]

Since at most times about half of the field is in the "average stack" predicament I can think of a couple of points that stick out:

1) watch the stacks you are playing against. If there is an aggressive stack at the table, don't play without something that you are willing to commit to. Stick to even stacks or smaller to have some leverage when making a play.

2) Focus on reads of players willing to call through a hand with weak cards. Don't try to bluff them and don't bet weak hands on all streets as they will just call you out with what might be a SLIGHTLY better pair.

3) Watch about commiting yourself (by betting too much on the flop) with hands you are not sure you want to see through if you are played back at (non-nut/weak draws, middle pairs, weak kickers, etc). Worst feeling when you push half+ your chips in and get reraised and have just about forced yourself to call with so-so hand only to find you have only a couple outs.

4) since most players are also average stacks don't be so concerned about it unless you are in a hand with a chip leader and watch for players who seem to be overly concerned about their average stack size and bet them off their hands (if they have shown they will fold) when you think they are weak.

Those are a few that come to mind....