Quoted from NicoVolta:
IPDB is awesome but the ratings are unreliable.
Totally agree. And maybe even a little guilty of giving me games higher ratings. But I have also rated a few games that I have owned (like Jack's Open, Royal Flush) as only OK.
My approach is to focus on the descriptions and try to piece together your own summary from looking at all the reviews for a game. You can usually get a sense of those who truly know the game vs. those going from memory or worse, downgrading a game so their makes the "top 10". As always, no substitute for playing.
There used to be a reviewer who had 100's of reviews and they were very well written. I can't recall his name but a few years ago I think he got upset about all the gamesmanship going on with reviews and pulled all of his. It was a loss - If I had known it was going to happen I would have printed them out before he took them down!