Dan, I sorta like that. Not only because it could benefit the small guys

, but because it opens my mind to new companies or products that I may not have been aware of. I was not aware of Pursuit until very recently. All because of the other forums strict censoring.
Free ads seem fine. I like that better than companies paying to get permission to start a thread about their products a certain #of times per month, then blackmailed to renew sponsor$. You will get bombarded with dozens of ad requests I am sure.... that will be a pain to deal with. No matter how you implement them, it will be called "unfair" by some folks I am sure. I would do a lottery and cycle them 2 or 4 times a year. Honestly, I would be less tempted to plug my own gear in a thread if I knew I had the opportunity to have a free banner ad.
Maybe offer a couple banner spots for a gear donation, then give the gear away to the board members? Full circle, no income.
Whatever you do, I am sure it will work, the folks on this forum are just happy to have this place.