I don't rely on reviews. I don't remember the last time I may have turned something down due to bad reviews.
But I do look at them. Well, at least the aggregates. If overall the game has like a 2%, chances are its bad. If something is average a 70, 80, or 90 it doesn't make a difference to me. If its a 50 on average, I'll probably avoid it but that hasn't happened yet