I don't think there's any prohibition against someone creating a topic (even daily) if you're really bothered,
No? Are you sure about that?
And how about:
1. No zero or low value, pointless or uninteresting posts or threads.
Unofficial list of (official) Bitcointalk.org rules, guidelines, FAQI think the best thing to do is to keep reporting his topics to moderators. If he does not stop, they may remove him from the forum.