Prefix Essentials featuring auto expiring prefixes and prefix filtering 2.5.4

I've given a prefix to most of the content on my site and use this to allow users to globally the prefixes from the forum index page, as well as giving them the option of ignoring content based on prefix. Highly recommended.

Excellent addon for forums with many prefixes. Support is top quality, and it is normal condition when you have addon from Stuart Wright and Xon.