A few of us chatted on IRC on how to do this.
For the yum repository at least, the simplest approach seems to be giving Derek a filesystem directory where he can push stuff to the openacs.org server over rsync.
At this point I'm tasked with configuring rsync and granting the necessary rights. I'll try to get it done over the weekend.
For Frank's and any other non-repository oriented installers, perhaps a well-publicized link out, or a local copy in a file-storage instance, is in order.
