An interesting topic, whether to accept advertising/sponsorship and the conflicts of interest that may accompany (whether they be real or perceived), or to maintain the status-quo? I'd imagine that there are pros and cons for both models, which I don't have the experience or business savvy to even attempt to try and spell out :-[. If a more commercial model is adopted, it would be my humble suggestion to adopt a set of rules which are clear to everyone, and all site users need to abide by if they wish to make use of the site. These rules also need to be enforced by a mod/admin team who are all on the same page to allow for absolute consistency across the site. If the site owner decides to move to a more commercial style, then that is entirely his/her decision to make. Just my thoughts, Steve.