You are, interestly enough, looking at the words used on a web site and then twisting your distortion of a brand into a Google key word discussion.
We are talking, or at least I thought we were, about a web site that refers to vBulletin as VBulletin. I am not discussing Google ad words and key words, and neither was the other poster who is also commenting (or at least that was my interpretation).
In fact, I though we were discussing this site:
http://www.vbwebmaster.com/
and their use of the phrase VBulletin v. vBulletin and also their use of VB v. vB.
So, it seems we are simply taking past each other.... oddly enough, or we are IP Einstein's trying to explain IP branding 101 to folks without experience in intellectual property rights and branding (sorry to repeat this, theme).
Neo