I think commercial posts are okay, as long as the intention of the post is clear, and the thread is actually informative. If you want to introduce a product, do it in a way that does not blatantly offend other people. It's probably good that you share some details of product as well. I often see posts that attack competing brands to better market their product, which is just taking a cheap shot ;)

I get the feeling that when Frank posts something, he is doing it purely out of the passion he has for the sport. Maybe his posts serve some sort of commercial purpose in the long run, but he is just a guy that loves to ride his bike. I don't see a problem with him posting videos and details on the bike he is riding. His posts are always informative and directly beneficial to a trials rider. He communicates his points across, and does not hide an ulterior motive or a hidden agenda.

Using the forum as a marketing tool is inevitable. It also has it's place in promoting the sport. However, soliciting people by implicitly attacking competing brands and purposely witholding information is poor practice as a business person as well as a forum user. We don't need that kind of hostility on a discussion forum.

:)