There are many variables that come into play in the administration of sites such as this. To name a few: bandwidth, public image, legal issues, complaints from providers and establishment owners etc. For example, all the legal risks for the postings are assumed by the owners. Board members for their part have a free membership.
As I said yesterday, board administrators, at their full discretion, set the standards as to what is acceptable at this site. Needless to say, given the diverse nature of this site it is unlikely that administrators can please everyone.