Thread:Merrystar/@comment-3481504-20141228102232/@comment-11001-20141230063322

Not really, no. At best you can lock a talk page so that new accounts/IPs can't leave a message, but I don't believe you can do that for a wall.

If you feel it would be a useful ability, you may want to send in the idea so we can pass it along to the product team.