I'd like to know exactly what the consensus is on "metacomments" within an article text - "More should be written here", "See WikiProject Foo for help with editing this page", "Is this correct?", and so on.
I'm of the opinion that things like this should almost always be in the Talk page. Having them in the article looks tacky and unprofessional. Only things that directly affect "customers" should be in the article, I'd say.
IMO: Some metacomments ("More needs to be written on this aspect.") have a place, and can be very useful to readers as well as writers. Others ("This is based on material from an unnamed 1911 encyclopedia.") can safely be relegated to [[Talk:]], if that.
-- Toby