Upgrade to orchard 1.1
Orchard 1.1 looks pretty slick, but also pretty complex.
However the upgrade did not go smoothly at all - before upgrading the site I attempted to install the latest version of the BlogML module, with which to take a backup. The only effect was to totally break the site - yellow screen on any URL. So, a bit of recent data has been lost. This is painful, but I will see what I can recover.
The configuration of Orchard 1.1 looks pretty complex, and will be ongoing over the next few days. Orchard 1.1 looks pretty powerful, but given the investment in time and effort needed to understand it and get it populated and looking like a simple blog, I may consider alternatives that suit my needs better next time.