Non-promotionally linking to a mixer's ANN thread will be allowed, whether or not it's a defunct mixer.
I don't know, but banning signatures and all promotional activities would be enough.
There's also this part:
- Mixer URLs will be automatically wordfiltered out, but you can still discuss mixers otherwise.
I guess we'll have to see how compatible that is with linking to a site that lists all URLs.
however, theymos understood that it could not be too restrictive, so it eased many of the rules. I believe that over time the most constructive solution will be defined.
Here is the most direct answer from theymos about mixer collections like this.