I just noticed that Alertbox articles (and other things) from useit.com are now incorporated into nngroup.com (the Articles section). The change must have happened recently, since I was regularly visiting useit.com while working on the next version of this site. My December 19th Alertbox email still has URLs to useit.com, so I suspect the change will be announced in the January 7th newsletter. [Update: The change was announced on December 31st.]
From a practical perspective, it means different URLs for Alertbox articles. A new feature: topics, connecting Alertbox articles and incorporating other NNGroup offerings. For example, the Applications topic leads with research reports, training and Tog articles on application design, followed by a list of Alertbox articles.
From a historical perspective, it means the end of the much-criticized visual design of useit.com. NNgroup.com has a pretty bare-bones design, but it probably will not attract criticism like useit.com's design did.
So far, all of the redirects seem to be working (no linkrot). I have only spotted 1 broken link: History link to Nielsen Norman Group: The First Decade. Non-Alertbox content from useit.com is a little weird, tho: for example, the CSCW '86 trip report is not really "Jakob Nielsen’s Alertbox: November 1, 2012" (it was published pre-Alertbox). All of the 1995 Alertboxes that I have indexed here seem to have lost their date, now all are labelled "October 31, 2012." [Update: All of the article dates seems to have been corrected.]
Now that Jakob's "personal site," useit.com, is gone, will content from the other 2 NNGroup partners be incorporated in similar ways?