I noticed that very loose players (PT-rated as "Extra Loose") with low AF (Aggression Factor) seems to be acting in ways that I didn't expect. Then I came across those threads -

First discussion about the questionable usefulness of Aggression Factor:
http://forumserver.twoplustwo.com/showf ... t=all&vc=1

Subsequent thread by PokerAce Josh on Aggression Frequency formula:
http://forumserver.twoplustwo.com/showf ... o=&fpart=1

I've reduced the visibility of Aggression Factor and replaced it on PAHUD overlay with Aggression Frequency as well based on what I learned from those threads:

I like Aggression Frequency stats better - it's a number from 0 (totally passive) to 100 (totally aggressive) and works well for all ranges of VP$IP.

Any thoughts/feedback on this topic?

I have!