Yeah, and if that permission has been given anywhere that the general public can't access (whether it's the alpha forums or the alpha itself), mentioning it, no matter if in cryptic terms, is a breach of NDA.
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Intermission time: http://www.youtube.com/watch?v=8z_hCwrNcLs Exceeding Love! Opening theme of Suikoden III ( going to be playing this next)!
If you mean content of the NDA itself (IE. the rules) then it's no breach, as it's publicly available.
If you mean blogs that publish content covered by NDA (pictures, movies. impressions, any kind of info and what not) SE can technically bring them to court and ask for damages. The blog owner/writer could wiggle out of the worst part of the trouble by demonstrating that the content posted was provided by someone else and that he didn't personally sign any NDA, but if he did sign the NDA he's pretty much nailed.
In any case SE can send a Cease and Desist letter to the blog owner, in which case the content has to be taken down, because it's infringing on Square Enix's intellectual property.
if it's not taken down, then SE can bring the blog owner/writer to court.
NDA content as in the terms of the NDA or alpha test material not released by SE?
Here's a little story from 1.0 alpha-
Some guy thought he was being super-clever by showing a live stream of him playing. He had his alpha account terminated and here's his open-ended Baw-fest
http://www.calvyno.com/ABopenletter.php
Moral of the story: NDA breakage, not even once.