I know Greenspan was not the only one who made the decision for the interst rate, but his vote was very influential to other Fed’s memebers. Greenspan WAS the ONE who represented the Fed to claim that there was no “housing bubble” in the public:

http://www.jsonline.com/story/index.aspx?id=42398&format=print

http://www.realtor.org/realtororg.nsf/pages/bubblerefute?OpenDocument

http://www.ultimateonlinemortgage.com/data/Newsletters/Greenspan%20sees%20no%20housing%20bubble.htm

Later, people realized that there was housing bubble, but Greespan claimed the housing bubble was not caused by the 1% Fed rate:

http://www.dailyreckoning.co.uk/article/101020062.html

He encouraged people to take advantage of the low interest rate to borrow more money. His goal was using the housing market to support the economy. But he went too far and completely ignored the long term damage since he knew that he would retire!

Now, Greenspan is commanding $100,000 for an hour-long speech. he’s averaging about one speech a week, meaning that he likely earned more than $4 million in speaking fees last year after leaving office:

http://money.cnn.com/2007/03/20/news/newsmakers/greenspan/index.htm?eref=rss_topstories