Another thing we could do for blogs is do collaborations on them. We'd have the option to invite a member to write a blog with us, and that member would have the option to accept or decline. They'd be notified, of course. I think maybe we could have a tab in My Zone, like the friend requests tab, to accept or decline collaboration requests.
Then perhaps the blog would show up in both member's blogs list, but it would be indicated that it's a collaboration. And only the original owner would have the power to delete or post it.
In the blog itself, somewhere at the top, there should be a lil thing that says it's a collaboration and with whom.
I swear I've heard of something like this before, but I might be mixing up ?id=12480 and some Helpdesks about changing the visibility of blogs.
Also, would it be necessary to strictly state "COLLAB" or something? I would think stating multiple authors, with the owner as the first listed, would be sufficient.