great place. Thanks for sharing all the insights.
Here's my 5 cent, for what it's worth.
If you want to change the Meta Generator, go to Admincp --> Style & Templates --> Style Manager --> choose the Sytle in Question --> All Options and hit Go.
Go to Common Templates --> Head Include:
change:
<meta name="generator" content="vBulletin $vboptions[templateversion]" />
to
<meta name="generator" content="What Ever You Want" />