It's already known to most people that Yahoo! is in big financial trouble. Even worse, they were tried to be bought by a company (Microsoft) they didn't want to sell themselves to. They successfully fought against that attempt, however, their value was much higher at that time than what it is today. They were even "helped" to survive by a company that they normally call a competitor (Google). But this help didn't last long as Google was afraid of the consequences of a deeper relationship with Yahoo! (i.e. antitrust).