Some things to note:

Blog posts, if they were set to private using the kludgey way of setting them so only Admins and Mods can view them, those became public with this update.
You can set Blog Posts to semiprivate by setting your blog (not the individual posts) to "subscriber only". Then you can control who subscribes to your blog.

Also we have noticed that because "blogs" are governed by a whole new system in VB5 instead of VB4 that a lot of people don't have the ability to create a new blog. Please note that "New Blog" and "New Blog Post" are two separate things. For example, you could have a blog on "Advice for making characters" and then another blog that is "My Character's Thoughts". And then you'd have individual posts within those blogs.

For people that already had "A Blog", you can still make posts, but might not be able to make a new blog.

In addition to everything going on, due to the upgrade of the forums, everyone's going to need to replace their relevant forum URLS. For example, if you have your character's forum CS linked on Fyre's Quick Descriptions, you'll need to edit it with the new one.

Sorry for the trouble. We were hoping that we wouldn't need to do this, but VB5 changed the way URLs works.