After some discussion, we have established as site policy the following:
Please respect that in the Jewish tradition certain questions, especially certain questions relating to sexuality, are discussed only in private. Such questions will be closed or deleted at the discretion of the moderators or community. (Source)
As a corollary, it would be nice — though perhaps not as important — to restrict also the ads seen on the site. Thus, ads for questions on other sites that deal with sexuality too explicitly (or whatever criteria we develop), or ads that do so themselves, would be banned. This question is meant both as a feature-request for the technical possibility and as a discussion of the desirability of having such a feature and the extent of its scope.
As an example, should this mildly sexually explicit ad for an English.SE question, which appeared on our site, be banned therefrom? (Linked but not included on purpose, so those who wish to avoid it can do so.)