I may read the trip reviews on TripAdvisor, but they don't deter me. I've stayed at several resorts in the Caribbean and Playa and have always provided a review (99% very positive). When I see people writing a review, for the same resort I stayed at, during the same week, and it's 180 degrees different from my review, then I just chaulk it up to those specific individuals had a bad experience and that shouldn't taint my decision on whether or not I go to a resort.
If you're reading 1 bad for every 10 reviews, odds are, the place you're wanting to go to is going to be fine. Like a lot of other people have said on the different forums, your trip is what you make it. Enjoy!