This YouTube API source code in Java uses Freebase API to retrieve a list of topics based on a user query. YouTube videos associated with the topic are retrieved through a code call to the API's search.list method.
File sharing service drop.io last week struck a deal with Facebook in which the larger company will acquire "most of drop.io's technology and assets." Founder Sam Lessin, a friend and former schoolmate of Facebook CEO Mark Zuckerberg, will go work for Facebook in product management. As of the announcement, users ceased being able to create new "drops" (the service's term for file uploads) for free. Existing premium users will have access to their accounts through December 15th, after which time all accounts will be terminated and all stored content will be deleted. Not all of drop.io's products are being wound-down quite as quickly, and at least some of the developer APIs will be remaining up for longer than the main service.