Anybody have a legitimate use for Alternate Data Streams in NTFS?

Alternate Data Streams in NTFS Applies to

* Microsoft Win32 Application Programming Interface, when used with:
      o Microsoft Windows NT Advanced Server 3.1
      o Microsoft Windows NT 4.0
      o Microsoft Windows NT 3.51 Service Pack 5
      o Microsoft Windows NT 4.0
      o Microsoft Windows 2000 Standard Edition
      o the operating system: Microsoft Windows XP

Very small ADS (Alternate Data Streams) are also added within Internet Explorer (and now also other browsers) to mark files that have been downloaded from external sites: *they may be unsafe to run locally and the local shell will require confirmation from the user before opening them. When the user indicates that he no longer wants this confirmation dialog, this ADS is simply dropped from the MFT entry for downloaded files.

Resource from Wikipedia