There's a site trying to aggregate professional reviews of books like Rottentomatoes: idreambooks.com.
Regarding names, it probably has something to do with the audience. You're going to have a more literate audience on goodreads than the general internet population.
I saw idreambooks when it was presented on HN - the search still seems to be broken, neither "Algernon" or "Flowers for Algernon" results in the actual book. And not a single results for "galaxy"? Weird.
And I don't think that the naming-policy is based on the audience being more literate - after all, I think most of the people complaining about Google Plus' naming policy were of higher-than-average intelligence. Maybe people are proud of showing off their reading skills?
Google plus was also a different audience. I'm not sure who these people complaining about Google+'s naming policy are.
But based on generalizations I'd say the average goodreads user is more educated. The average Google+ user would be a more internetty early adopter type (since Google+ doesn't really satisfy a niche interest except to be an alternative to facebook).
Regarding names, it probably has something to do with the audience. You're going to have a more literate audience on goodreads than the general internet population.