Well, we've actually been using AlchemyAPI for this exact function for some time now. They were recently acquired by the IBM Watson team, so it's kind of a pain

Well, we've actually been using AlchemyAPI for this exact function for some time now. They were recently acquired by the IBM Watson team, so it's kind of a pain to get set up through them now (you have to go in through the Bluemix control panel to create an account and set up billing). They're probably not as accurate as Google, which is why I'm going to be spending tomorrow implementing this and comparing the results, but they are pretty darn good. http://alchemyapi.com http://alchemyapi.com