Amazon's recent additions to its Kindle family, including the Kindle Fire, have held their position as the bestselling product across the online shopping website.

Over the course of the Black Friday holiday shopping spree, Amazon saw sales of the devices rise four times since the same period in 2010. 

Released in the US on 15 November, the Android-powered tablet was announced eight weeks ago, with Amazon presumably including Kindle Fire pre-orders since then within the period refered to in its press release statement.

Of course, no specific figures were announced.

Black Fireday

"Even before the busy holiday shopping weekend, we'd already sold millions of the new Kindle family and Kindle Fire was the bestselling product across all of Amazon.com," said Dave Limp, vice president of Amazon Kindle.

"Black Friday was the best ever for the Kindle family – customers purchased 4 times as many Kindle devices as they did last Black Friday – and last year was a great year.

"In addition, we're seeing a lot of customers buying multiple Kindles – one for themselves and others as gifts – we expect this trend to continue on Cyber Monday and through the holiday shopping season."

It has been predicted that the Kindle Fire could sell as many as 5 million units by the end of 2012, with shipment volumes being increased to meet the expected high demand.

[source: Business Wire]