Complex, Strategic, Multiple Victory Routes, Medium Length (~2hrs), Long length (0.5-1 day), Good Production (and 'overproduction'), Elegant Mechanics... Dislikes:
Simple, Short length (< 1hr), 'humourous', identifiable best strategy, Co-op, High Random Factor, anything 18xx or Splotter.Doesn't Care:
Theme (either what it is, or whether it's closely linked to the mechanics)
That said I prefer historical/ancient European themes all other thing being equal. I hate Superheroes and dislike war themes later than medieval.
1200+ Ebay Feedback (100% positive): http://feedback.ebay.co.uk/ws/eBayISAPI.dll?ViewFeedback&use...
My 'Top' and 'Hot' lists are just of boardgames (not CCGs, miniatures wargames and RPG's) all of which deserve their own lists IMO. If I were forced to integrate them, then I have to say 40k and MtG would have the top 2 slots, with most others falling to RPG's (back to game length and complexity!).
I also only list core games, and assume that they will be played with most/all expansions (and certainly played with any expansion of equal or higher score). If you look through my ratings, you will often find a game scoring 8 for the base game, and 9 with the expansion for example, and in that case I would never play it without. Of course other games have expansions that add little or nothing, and they are scored accordingly.