Legally, the purpose of a copyrights is to give credits, not to be obstructive. Let's face it: it is ridiculous to have 8-9 lines of copyrights at the bottom of a page. Vbulletin says nothing about commenting out. Commenting out keeps it in the code, does not remove it, right?
Well, I've never seen it in such an extreme way
vBulletin doesn't allow you to comment it out, as it is stated in the license agreement that it has to be visible.
Quote:
Originally Posted by license agreement
All vBulletin copyright notices within design templates must remain unchanged (and visible).