I agree with you when you say that most of banner exchange advertised illegal, stupid etc.. websites, but what I meant was to create our banners exchange among Forum members that have a wesite relating to the powerbocking, so with only selected sites, not use one of the many banner exchange that are out there, I think that a banner graphic could be prettier than a simple link.
However I understand your comments, but why don't we create a place where we can exchange links to put on our websites?
In my website I put a lot of material, videos, photos, etc... of other people, even members of this forum, for two reasons, first reason is because it is useful material to promote this new sport and secondly because they are very good and deserve a little publicity.