In a well-received move, major British newspaper The Guardian has opened up access to its content and data sets to third parties. The Guardian's Open Platform comprises both an API (our new Guardian API Profile) and a Data Store that provide access to multimedia content and data sets respectively. The Content API includes approximately 1,000,000 articles that go as far back as 1999 and in some cases much further back.
Recently we wrote about the wonders of PubSubHubBub and what was possible when services push data, in real time, to external web apps. Twitter's Stream API makes it clear that we're headed towards an exciting and very real-time web. Now YouTube is along for the ride.
Recently, blogging service Posterous thought it would try and help ease the burden of moving from other places on the web to its blogging platform by developing a bunch of migration tools. All of these tools were built on other services' open APIs and designed to go in, grab your content, and republish it through Posterous maintaining as much metadata as possible. Things were fine until photo-hosting service Twitpic caught wind and cut of Posterous' API access.