Warning: esoteric technical aside follows.

One of the forthcoming projects we'll be working on is a shared BlogMatrix site where blogrolls, OPML files, radio subscriptions and whatnot can be shared. I've been looking at something called SXIP (pronounced "skip") for a single-login system but there's only one problem: if there's no functional "homesites" available for us to hook into, there's no way we can use this product/service/idea.