Go into the forum that you want to move topics FROM. Click the admin tab then click Manage Topics. On the search page select the forum that your moving FROM. Leave everything else default and click the search button.
When you have the results list select All, Across all results pages. Then select Move To and select the forum that you want the topics to be moved to. Click submit ad they will all be moved.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .