I don't know if buying DDG would be a good investment.

Yahoo! had a great search engine to begin with. There wasn't anything wrong with it, really. I think Yahoo! just got a bit carried away with the UI aspect of it.

DDG prides itself on privacy and no tracking while giving good results. I don't think Yahoo! would be interested in keeping that tradition.

Though, I could be wrong, of course.

edit: was supposed to reply to the other guy... oops.. message still stands.