Interesting post from Timothy Green, Rattle Editor, on their Facebook page.
He sets out Rattle's line on what being published online means and discusses the pros and cons that approach and why he's adopted what he claims to be the "industry standard", which seems to be that anything that is publicly viewable on the web and can be found by a search engine is considered public.
He also says that, "anyone who is serious about publishing their writing ... and is already careful about keeping their poems away from search-bots".