If I were Jerry Yang

I'd put all new updates to the services on hold and create both open social and facebook applications for all its services, if it wants to continue to be the number one destination on the web. Social web sites with all these new functionality would probably be the place where a good chunk of web users spend their time, if they get all their tv and movie schedules, finance quotes, news and gossip in their social networking platforms like facebook, bebo, myspace... fewer people would have incentive to go yahoo services for such information. So the best idea would be to go where the users are. If web browser is going to be replaced by social network, you better be there with full force and provide the best widgets/ gadgets/ apps or whatever they are called. Of course you can still be in control of the advertising that goes with in the app. And also probably can use the expertise to server ads for other apps as well... And if the Yahoo! Mash comes up well, Yahoo would have the advantage that no other social network platform, no other app developer and even google would have as Yahoo will have the option of holding the user to its Yahoo! mash.

Yahoo, start working on your apps and let them be the best.