[Useless]

As a free site builder, you need to decide who is going to give you more/better traffic over the life of your free sites, search engines or link lists. That will help you decide how to do your mirrors. If you think that your free sites will compete well enough in search engines against millions of other pages, then go ahead and put the effort into morphing your mirrors. If you think that your free sites aren't unique/fabulous enough to rank well in search engines, don't bother making changes in each mirror.