Has anyone used this modification on there forums? Do you see any benefits from using it? We use it on all of ours and it does seem to help speed things up. Heres a link to the latest version for those who havent heard of it: vB Optimise 1.3.2 - vBulletin.org Forum
I don't use it, as I don't own a vBulletin forum, but on forums I visit, I have heard about it being used. Like you said, it helps to speed loading times up, especially if you have a lot of images/content on a page.
vb.org (and vb.com) are having issues because of a ddos. Using a mod like this would not help at all.