Well, they *are* better than nothing at all. Sure, in the best of worlds, we'd have lovingly hand written indexes and documentation, such as for std_algorithm. However, for those modules that *don't* have that hand written doc, it is better than nothing.
It is possible to do something like that automatically:
http://arsdnet.net/d-web-site/std_stdio.html http://arsdnet.net/d-web-site/std_datetime.html
