Amazon Likely Paid $1 Billion for Goodreads - Businessweek

Likely not a bad ROI...

"If Amazon bought into those points, the deal could have easily jumped into the 10-figure range. After all, the company had an $8.1 billion cash pile sitting around at year-end.
Either way, yesterday was likely a big payday for Goodreads founders Otis and Elizabeth Khuri Chandler. In true Silicon Valley fashion, the company bootstrapped solely on an angel round in 2007 and a venture round two years later, according to the firm. Its financing haul to date: about $2 million."

Amazon Likely Paid $1 Billion for Goodreads - Businessweek