As near as I can tell, if you create a station, give a track on that station a thumbs up and then delete the station, the track continues to be thumbed up. At least that would explain why my Thumbprint Station indicates I have hundreds of thumbed up tracks but when I go through all my stations I find only a few. It would also explain why on a newly created station, the track selection algorithm seems to still favor songs that I thumbed up on stations that I deleted a long time ago. After a station is deleted, there isn't any way to get to the tracks that were thumbed up on that station, and consequently no way to remove the thumbs up. There should be a way to see all of your thumbed up tracks, independent of station in one place: Maybe an automatically generated playlist of all thumbed up tracks, sorted by name? And that list should have a way to take away thumbs up from tracks.
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