I am seeing threads like this https://forums.digitalpoint.com/threads/pr-3-valid-3-years-old-da-26-good-backlinks.2702211/ where the OP lists more than 1 domain for sale. Are the users allowed to do this? I, personally feel that such threads should not be allowed for the following reasons. - Users can just verify one domain and list other domains (without verifying) which questions the ownership of other domains. - Users can easily add some fake domain names and say domain xyz.com is sold and bump their threads. - Its like multiple listing where in the users verifies the domain xyz.com and adds it to one thread and also adds the same domain in some other thread.
It's not specifically disallowed, but definitely frowned upon. It's strange because it only benefits the seller since only the domain with verified ownership is listed in the domain/site marketplace.