Automatic adding of superuser as admin user to each blog, and why.

Hello.

In my quest to provide ready made marketing websites with blogs to my users, I need to be able to publish and update their page content and push posts and pages to blogs across my WPMU installation.

I started using Multipost-MU (http://wordpress.org/extend/plugins/multipost-mu/) and was thrilled with that.

Then I noticed that I could not push pages and posts to blogs not created by me. They were not showing in the selection box of sites to publish to.

I then added myself as a user (admin) to those blogs and now, presto, I can use multipost-mu with those blogs also.

Is there anyway that I can automatically add myself as an admin user to each blog that is being created?

Thanks for your help.

Ralf