What do I look for in a post? Clarity and Contribution.
NO vote: If the post is clear, but makes no contribution OR if the post is unclear, but makes a contribution (though I will try to improve the clarity either by comments or direct edit).
UP vote: If the post is clear and makes a contribution.
DOWN vote: If the post is unclear and makes no contribution (though I will try to see if I've missed something by commenting).
DSP.SE code may be available here.