Reply to Trainspotter - who uses it

Anyone using this application to manage your collection?

I believe the idea and features it provides are awesome, but i'm still learning how to use it properly and what all it can do aside from creating smart playlists. I keep creating them and then I open up Traktor and they all don't pop up. I know I'm hitting save and can see them in my playlist folder in My documents - but they disappear. I have to create them 2-3 times before I get it right. I'm sure it's error on my part.

Looking for tips, tricks, likes and dislikes.