From the American Philosophical Association's "best practices" for journals (available, rather oddly, on Google Docs):
Since many philosophers post their papers on the web prior to submitting them for publication, referees are often able to identify authors by a web search. Referees should not attempt to identify the authors of papers they are refereeing.
A more serious complaint: instead of recommending that authors be allowed to self-archive their work without restriction, the APA comes up with the mealy mouthed: "Journals should make clear to authors what their policies are about post-acceptance and post-publication posting of their own articles." This is, at best, only technically consistent with the earlier exhortation that "journal editors should, in general, be willing to consider articles released to pre-print archives."