Amazon has announced positive financial results for the first quarter of 2009.

Net sales increased 18% to $4.89 billion in the first quarter, compared to $4.13 billion in first quarter 2008 and would have been higher if it were not for foreign exchange rate issues.

Net income saw a 24% rise to $177 million, compared with net income of $143 million the same time last year.

During the quarter Amazon introduced its second-gen Kindle e-book reader, but has still not revealed specific sales stats for the gadget.

Jeff Bezos, founder and CEO of, said in a statement: "We're grateful and excited that Kindle sales have exceeded our most optimistic expectations".

For the next financial period of the year, Amazon expects net sales to increase between 6% and 17%, compared to how the company did in Q2 of 2008.