I always think that if you put your pictures into the critique section, you are advertising that you do not really know your trade. Not an image you want to project.
Do buyers really look around the forums? Sure, one or two may be the exception to the rule, but surely that's not what the vast majority of buyers are doing.
Getting more exposure to fellow contributors means more exposure to copyists who will rip off your portfolio.
The exposure we want, to the people who count, is much harder.
I have wondered if it would be worth our while to band together as forum members and take out our own advert in a trade magazine. What do you think?