From Paul Graham, inside view:
http://paulgraham.com/yahoo.html
"What went wrong? The problems that hosed Yahoo go back a long time, practically to the beginning of the company. They were already very visible when I got there in 1998. Yahoo had two problems Google didn't: easy money, and ambivalence about being a technology company."
Some time around 1995-6, yahoo reported earnings $0.05/share above expectations after the markets closed, and the stock shot up more than $200.00 in after-hours trading. Can any company survive that?