vista - almost old news

"... but in Vista, they are making use of the NT File System's (NTFS's) streams — attaching keywords and such to the files — to make them much easier to index and find quickly. The limitation here is that it's not a database really, just a faster way to find files using the traditional search techniques. The other limitation is that it's local PC only, whereas WinFS has the potential to work across a network, if you're using a WinFS-based server." according to http://www.microsoft-watch.com/article2/0,2180,1853593,00.asp

this talk describes something simliar over 10 years ago. interesting.