* ReiserFS v4 is still immature, and nobody has figured out how to finally absorb exif tags (and other kinds of metadata) into the filesystem itself, rather than keeping them inside the files.  And basic tools like "ls" do not access the metadata inside the files.  More advanced file managers (like Konqueror, or Explorer) do use them to an extent.

* ReiserFS v4 is still immature, and nobody has figured out how to finally absorb exif tags (and other kinds of metadata) into the filesystem itself, rather than keeping them inside the files.  And basic tools like "ls" do not access the metadata inside the files.  More advanced file managers (like Konqueror, or Explorer) do use them to an extent.