Mike Arrington's post at TechCrunch does a fine job of conveying why we think this is a big deal. There are a couple details that I can help clarify though:
"Tomorrow they’ll announce..."
Well, not really... I think that you just announced it Mike! Salim confirmed too! But hey, if you're looking for an official Yahoo! person with a working purple badge to actually confirm... I'll bite! We hired Salim!
He takes over from interim head...
That's not how I'd put it. Caterina's role in my group (and in Brickhouse in particular) is ongoing and formidable. She's not only been the driving force behind making this happen, but also will remain the "north star" that ensures the program rocks. As you point out, Brickhouse itself is "yet-to-be-launched" so we'll be saying a lot more about it and clarifying all this in the near future. But I couldn't be happier or prouder to have both Salim and Caterina involved. Lucky us!
In the really bad pun department... The only shame is that Salim isn't working on Y! Mail... after all, Salim Ismail... And my mentor Ramesh Jain... He's such an Artificial Intelligence pioneer they put AI smack-dab-in-the-middle of his name... Speaking of names, can you guess how many times Caterina has been spell-checked into "catering?" (Not to mention the problems she has with her last name...) Ok... I can hear you groaning. I'll stop now.