Google is clearly moving fast in setting up partnerships with ebook reader manufacturers and store operators to give some weight to its threat to Amazon and the latter’s Kindle product line.

First, the company teamed up with Sony, adding about 1 million public domain books to the technology giant’s eBook Store.

Now Mountain View has sealed a deal with British Interead, bringing the same amount of ebooks to an online store outside the U.S. for the first time (where close to half a million of them are available for free).

Reading-based Interead is the company behind ebook store COOLERBOOKS. The company also manufactures COOL-ER eReaders, small, elegant ebook readers that kinda look like giant iPods and cost $249 in the United States.

COOLERBOOKS.com accommodates 19 document formats, including EPUB and PDF, and MP3 for audio books, giving the ebookstore the broadest range of formats available on the web.

Enough to pose a threat to Amazon, just the beginning, or a venture destined for failure? Time will tell, but it’s always good to have alternative free ebook stores, even if you won’t be finding the bestsellers over there.