Importance of positive red line - Two Plus Two Poker Forum

http://forumserver.twoplustwo.com/39/small-stakes-pl-nl/importance-positive-red-line-486569/

Meditations on the "Red Line"

Lately, JF Jerome and I have been talking about the red line, especially Zaitsev's series about it on cardrunners. 

The red line- winnings without showdown in hands vs $ won graphs- is perhaps the most mysterious element I frequently look at in my poker results.

Opinions differ on what shapes it, and even whether we should bother looking at it at all.  I do know that my red line runs about even at lower stakes, where I barely bother to fire a second barrel, and runs positive at 50 NL at higher, where I frequently fire second barrels to move people off of hands.

What does everybody else think about the red line?

PS - #15 is the most interesting post of all in this forum.