Facebook buys Instagram for 1Billion Dollars

Facebook has agreed to buy mobile photo-sharing app Instagram for approximately $1 billion in stock and cash. It is Facebook's largest acquisition to date (nothing else even comes close), and comes just weeks before its highly-anticipated IPO.

According to its registration documents, Facebook had around $3.9 billion in cash on hand as of year-end 2011.

"This is an important milestone for Facebook because it's the first time we've ever acquired a product and company with so many users," said Mark Zuckerberg, in a statement posted on his Facebook timeline. "We don't plan on doing many more of these, if any at all. But providing the best photo sharing experience is one reason why so many people love Facebook and we knew it would be worth bringing these two companies together."

San Francisco-based Instagram had raised around $7 million in venture capital funding, from Andreessen Horowitz, Baseline Ventures, Benchmark Capital, Chris Sacca, Adam D'Angelo and Jack Dorsey.

There had been reports that Instagram had raised $40 million in new funding at a $500 million valuation last month, but that deal did not actually occur.

"It's important to be clear that Instagram is not going away," Instagram CEO Kevin Systrom wrote on his company blog. "We'll be working with Facebook to evolve Instagram and build the network. We'll continue to add new features to the product and find new ways to create a better mobile photos experience."

For context, Yahoo (YHOO) acquired photo-sharing company Flickr for just $35 million 2004.