To The Forums, Sammy.
Filter these Bad extensions, go to Tools > Options > Filters > Keywords. Now add the following extensions including the dot. .exe, .rar, .wma, .zip, .mov. Click Apply and OK. This will clean up a Ton of Junk while searching. If you decide you Don't want to block a certain extension then go back and Unblock it. Try this, I think you'll like it.
What you are encountering are spam, and fake files. See Links below for more helpful info.
Always use
Bitzi to check video files.
See:
Recognising Fake files
And for tips on finding good files, see:
How to find music.
Hope this helps.