It seems to be kind of a gray area... Cairenn and the Carbonite folks seem to feel it's okay. I've asked Blizzard directly and receive no response whatsoever to my inquiry.
For now, I tend to read the "no service related to an add-on" to include support since that is clearly a service related to an add-on. However, it may be something Bliz is willing to permit. I dunno. I just really wish they would do something to indicate to the community "Hey, we hear your comments and we're looking at them all and making revisions" if nothing else.
My concern is this... I'm a fighter and my nature is to go toe to toe with Blizzard and make them put their lawyers where their mouth is. I volunteered for Army duty in the 70s because I fundamentally believe in right and wrong, fighting for your beliefs, etc. However, I also understand the concept of a greater good... if I go toe to toe with Blizzard and they ban nUI, I'm not the one that gets punished, my users are.
That's where Blizzard has me bent over.
All I can do is try to be creative and to see where this topic leads. I am talking with lawyers and I do have representation, but for now I'm choosing to comply and give Blizzard the benefit of the doubt... and look out for my users. We'll see where it goes from there ~smile~
What people don't get is that I am, ultimately, an artist at heart.
My brush has two colors, 1 and 0, and my canvas is made of silicon.