I've noticed that some major sites where having up-to-date information is important, such as those providing financial or medical advice, have started adding a "last reviewed on..." indicator.
These sites also tend to have very obvious markers saying "this information is no longer maintained and only for historical reference" or "this information is no longer maintained but the new equivalent is here" where appropriate.
Personally, I find the indication that the information has been checked recently and is still current to be more important than when it happened to be published for the first time or when it was last changed.
These sites also tend to have very obvious markers saying "this information is no longer maintained and only for historical reference" or "this information is no longer maintained but the new equivalent is here" where appropriate.
Personally, I find the indication that the information has been checked recently and is still current to be more important than when it happened to be published for the first time or when it was last changed.