Fixing this is very straightforward and we would like to share this
simple, yet powerful tip with you:
Simply replacing the powered by VBulletin from your vBulletin powered forum with a more descriptive word about the contents of your forum will help increase your forum SEO and traffic, simple way to do this is to follow this steps:


1. Login to your vBulletin admin panel
2. Navigate to your vBulletin admincp
3. In 'Phrase Manager', search for this phrase variable: x_powered_by_vbulletin
4. Change the following:

REPLACE

{1} - Powered by vBulletin

WITH

{1}

This simple change will remove the "non-compulsory" ("Powered by
vBulletin") text in your forum's title, improving your your Long Tail Search referral volume.