Comment on SimilarTunes

I had commented this:
Huh. This uses the lastfm database or something? I like it, it's like a pandora for my own itunes music.
Simple, clean usefull...
Yeah I agree I am impressed.

but now that I have fully tested it I realize that it is not copying the playlists over to iTunes. It just makes empty ones with the names I give it. Can't figure that out.