Summary:

LibreDigital, which helps publishers deliver their content to e-readers and to digital bookstores, has raised an additional $4 million. The…

LibreDigital, which helps publishers deliver their content to e-readers and to digital bookstores, has raised an additional $4 million. The company, which had already raised more than $27 million from backers including the New York Times (NYSE: NYT) and HarperCollins Publishers, including $8 million in a funding round last May, says the new funding will let it expand its initiatives “more quickly in 2011.”

It doesn’t specify in its announcement (via PEHub) which of its backers is putting in the new money. Last summer, it purchased e-commerce technology from HarperCollins in a move that it said would allow it to offer an “end-to-end solution for publishers looking to accelerate sales of e-books and digital content” since it would now be able to power digital bookstores for publishers.

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