There will be a lot of discussion about Yahoo and Flickr over the next few days. There is an interesting post on Jeremy Zawodny's blog where he notes some of the characteristics of Flickr and looks forward to seeing it play a more active role within the Yahoo environment.
As Caterina wrote, this isn't about just throwing millions of users at Flickr or bolting Flickr onto Yahoo! Photos. Think more deeply about it. There are many parts of Yahoo that will be Flickrized in the coming months. And with more resources available, Flickr itself will be able to grow like never before.[Jeremy Zawodny's blog]