Alex Schroeder, one of wiki legends (he created OddMuse), thinks about moving away from OddMuse for his website and moving to a static site! What he needs, is a different wiki engine, though. A single user wiki engine is not a wiki engine really though.

But I've been thinking about that too to be honest. Trust brings problems. Accounts bring problems. Betula works fine being single user. Would the same work for Mycorrhiza? Most installations are single user after all. We're living in the age of individual+personal websites.