How far back do your newspaper's online archives go? The U.S. Library of Congress has a database of thousands of newspapers dating back to the 1800s. In the case of over 150 of the papers, there are also digitized, searchable pages. And it's all available via its new Chronicling America API (technical details at our Chronicling America API profile).
Do you have an idea on how to aid writers with spelling, context and grammer and like the idea of a few extra dollars? Wordnik, an online dictionary service, has announced a competition to create a mashup using their API.