This add-on was requested here: http://xenforo.com/community/threads/no-increase-for-short-posts.35220/
This add-on allows you to pick an array of forums and a character limit. In the selected forums, if the character count of a post is lower than the character limit then that post does not get counted towards the user's post count.
This should help achieve better interaction from your users, with less of a temptation to make short posts.
This add-on supports the Add-On Installer. You can simply download the zip archive and upload using the Add-On Installer option in the Admin CP.
- Download the ZIP and extract the contents
- Upload the contents of the upload folder to the root of your XenForo installation.
- Install using the provided XML.