I think Gamespot.com is fairly good hit if you are just interested in what the game is about. They usually write nice summaries and discuss the main points of the game. However, do not even look at their marking. It's rubbish. One of my favourite games got only a 4.5.

The other thing that bugged me was that all the European games generally are in the lower ranks. Many sweet German and French games got kicked down all the way just because the English version had a bad script.

On the other hand, they write quite a bit on small things about the game, which you usually do not notice, e.g. a short game is often an allegory to some film, while the longer ones often resemble books.

So read it, but do not use it as a sole argument for getting or not getting the game. Ask here.

PS: And mind you, Chrono Cross didn't earn a 10/10. There are games that are just so much better.