For the sake of a more complete picture:
6.3. Aluminum Boat & Jon/V Boat Discussion Forum assumes no responsibility to monitor the Websites but we may do so at our sole discretion. Member-posted content may be removed from the Websites at any time with or without cause and without prior notice.
The moderaters, site administrators, or owners may, at their discretion, remove any content. That's exactly how privately owned, non-governmental sites should and do work. I don't post on here often enough to have much chance of my post being locked down or removed, but I have had posts on other privately owned sites locked down or removed. Sometimes I don't really understand why, but if the site is useful to me I just shrug my shoulders and move along, not really worrying or caring why action was taken against my post. I much prefer that to some of the sites where my membership proves to be useless due to all of the political whining and back biting that often takes over threads that started as interesting or useful.