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.
APIs are not only critical when it comes to extending the digital reach of an organization; they can also provide tangible brick and mortar benefits as well. Walgreens, for example, recently announced that it has developed an API and software development kit that allows developers of mobile applications to include the ability to print out photos within their applications at any one of 7,907 Walgreens locations.