blojsom 2.0 (dev) is powering this blog (the one that you're reading now) and the blog of
my better half. But that wouldn't be two installations of
blojsom, that would be one installation. Not that it's any major engineering accomplishment, but if you want one of the most lightweight and flexible blog software packages that can power any number of blogs with a single installation, then maybe blojsom is for you.
All of the things you've come to know and love about blojsom are present in blojsom 2.0, but with added multi-user support. Everything from the blog configuration to the supported flavors to the flavor-based plugin chains to the users authorized to post via XML-RPC to the look and feel of the blog ... all separate per user.