Yahoo! founders Jerry Yang and David Filo got stupid advice from their investment bank advisors and blew their chance to close the deal with Microsoft as of this Sunday morning. Neither Yang nor Filo are experts in how to sell a company in a multi billion dollar deal. They rely on their investment banker and advisors in the negotiations since the talks started with Microsoft. The difference between the offered price of $33 and the asking price of $40 per share makes a difference of roughly $1.4b per share, so it is not small potatoes.