I've been trying to find a way for users to register to all blogs at the same time but I have not found a way yet. I use MT with several blogs, all being a different section of a site.. so I would like users to register and get permissions to comment on all of the sections (blogs) with that single registration automatically. Does anybody know how to accomplish this?

Nobody answered so I guess i'll just write some comments in case anyone reads it.

I've been having a conversation via e-mail with Mark Carey of mt-hacks.com and we both agree this is a serious lack in the MT system. There is currently no way of making this happen. It really should be built right into the system already but who knows why it's not. He is planning on taking a look at the source code to evaluate if a plugin is possible. This has been a topic of discussion in the Six Apart pronet and let's hope it becomes a reality soon.

Once a commenter registers for one blog, they should automatically be associated with any other blog on that installation as soon as they try to log in there. That is, if you can comment in one blog, you can comment in all.

I've seen your comment a number of places, though, so maybe I'm just missing something.

You sure about that? Wierd. It has never worked for me and the people I have talked to have agreed. I'll give it another shot and see if it works now.

No, I think you're right Carlo. I've just set up MT myself, with multiple blogs making up different sections of my website. Currently, the only way to allow a user access to them all is to manually add permissions to the other blogs for that user.

I was disappointed to find this out because my website will eventually have many sections Hopefully someone will be kind enough to find a solution.

Any updates on this? I'm wondering the same thing. Just enabled registration but don't want people to have to register multiple times (and I don't want to have to add new commenters to all blogs manually).