Mass-Delete Topics add-on allows to delete many topics quickly just checking the boxes, which should appear for admin/moderators under Topics listings. That way the moderation of your board may be completed in a much faster term.
Deleting many topics at once will work like you would remove topics separately with all related add-ons stuff affected, for example, with all attached files if you have File Attachments add-on
installed; or a Poll, if you have Polls add-on
installed and there is some Poll attached to the topic which may be allowed to delete by a setting rule. Messages and topics amount will be re-calculated after deleting of each topic, so if something interrupts on the way, it shall not affect forums in common.
When you check-out the boxes, the add-on will load all processes in an iframe, so you may watch the progress right away.
This add-on is released in quite experimental version and will not be available to test on our demo forums (we are afraid that all topics on demo forums will be quickly deleted then ;-). Also in the current version, it has an embedded English interface only, no separation by language packs.
Additionally, I personally do not support the idea of deleting a topic without even looking what it's about. However some of you may find it useful, so you are welcome to download
and install it for you very own purpose.