Garo the correct filters are these
If you added the : at the end of user that would not work properly.
Its also worth noting that you can still get 'fake' files using those, but to be clear there are two types of fake files right now on WinMX.
1) Mislabeled - This would be a file that says its one thing and when you get it downloaded its something completely different. The best way around this is to use a player that is compatible with most video files. I myself use VideoLan Client, a free player that works great, as soon as you have about 3-5% of a file you can 'Right' click and choose 'Play'. You should have a pretty good idea if its really what you are looking for or not. You can get this VideoLan Client from our Links page under Utilities > Video Tools.
This can be a accident, poorly kept files of real sharers or the Industry flooding in files to try to make your life difficult.
2) Fake Files - These files are truly fake, They are not real files but fake data set up by software to load as a real list so that you will attempt to get it. These files dont download because they are not really there, and usually will turn Red Timed Out Waiting For Network Response in your transfers screen.
This is the work of the Industry and using the filters -c: -user will weed these out almost 100%.