Having only recently begun to poke around at the Wordpress Multi-Site database layout thanks to having to take over responsibility for an 8000+ blog morass of a

Having only recently begun to poke around at the Wordpress Multi-Site database layout thanks to having to take over responsibility for an 8000+ blog morass of an install, I can say that the hacky way in which Wordpress achieved multi-site capability would actually make this transition relatively simple. Other than ensuring user IDs in the database were in sync, the core blog tables themselves just need to be imported with slightly tweaked names, since each sub-blog in multi-site WP has its own independent set of tables.