In Nautilus it is possible to hide files and folders by listing the files in a
.hidden file in the directory where they reside.  This feature is very useful
for sysadmins that want to reduce information overflow for ordinary users, by
only show files and folders on a need to know basis. 

The problem is that the hidden files are still listed in file dialogs. Here the
problem with too much information is even bigger than in Nautilus windows as the
file dialog often is smaller, and the chance that the user have to resort to
time consuming scrolling to find the file he needs is higher.

So please support hiding of files listed in the .hidden filein file selection
dialogs as well as in Nautilus windows.

BTW: .hidden files is also by MacOS-X. Supporting the .hidden file would
increase the compatiblility with filesystems exported from MacOS-X.

Other information: