Yahoo is trying to convince everyone that they are still a search company. Honestly, if you do not power your own search results, if you do not crawl the web and own the ranking algorithms, you are not in search. Ask.com is more in search than Yahoo, in my opinion. Well, let me step back just a second.
When the Microsoft & Yahoo deal goes through, Yahoo will not power the search results on Yahoo Search anymore. They will power the look and display of those results, as far as I know. But in my opinion, if you do not crawl the web and index content and then power those ranking algorithms - you are not in search - you are a aggregator of some sorts.
If I said Ask.com isn't in search because they use structured data, for the most part, then the same applies to Yahoo.
Do you agree? Here is a poll:
Forum discussion at WebmasterWorld.