Yes, it is allowed.
As I suspected!
However there are other "rules and vague rumour, open to individual moderators to enforce" that could cover this situation?
Like vague rule number 1, "1. No zero or low value, pointless or uninteresting posts or threads."
(from the "somewhat complete, unofficial list" at
https://bitcointalk.org/index.php?topic=703657.0I'm not looking for someone with 2 alts. This is different.