I've just upgraded the forum software to the latest version and I've also upgraded the Blog Software. The Blog went from version 1 to version 2 and it has so many new enhancements I don't know where to begin describing them. My three favourite enhancements are that you can customise the style of your blog (you can even copy your profile style with one button click), you can really customise who can and can't see blog entries (for example, you can make your blog open to everyone to read but make single entries private if you so wish), and you can create your own custom web pages within the blog. There's a list and more info here:
http://www.vbulletin.com/forum/showpost.php?p=1667940&postcount=1
http://www.vbulletin.com/forum/showpost.php?p=1667940&postcount=1