The Wordnik Java Sample Code by Wordnik demonstrates how to interact with the API. With accurate integration, developers can include definitions, sentences, spelling suggestions, synonyms & antonyms, phrases, autocompletion, and word of the day.
GoodGuide is a service that we have been using as a family for a while. It attempts to analyze a product holistically & scientifically to produce a simple 1 to 10 rating of its "goodness." I am personally satisfied to see that the GoodGuide API will share this data with the world.