Members advertising section

Forgive me if this has been suggested already, I'm just starting as a newbie here, but it would be nice to have a section where fellow members can advertise their goods and services so others can patronage them. I know it goes against rule #2, but if it's isolated to only a single section then it might be manageable and a benefit to others . It seems to work well on some of my other forums, like automobile and hobbyists sites. Just a thought.