It is a pretty compelling argument for little benefit on Yahoo's part. The correct answer for Yahoo is to freeze email in the previous domain, create a new domain for mail and move forward. But there is a certain lack of understanding that is settling in a Yahoo which feels distinctly like 'new young people' (and I mean that in the nicest way possible) but people who consider the time before they were aware of the world "ancient history" and for new grads from college in 2012 - 2013 that was anything before 2000.

Imagine the fun that could be had if Hollywood decided to 're-use' old stage names. We could get a bunch of new John Wayne movies!