I have been working in OpenSim for the most part on Tribalnet’s p2p implementation. You host a standalone region on your own computer, but you can publish it so you connect to a central grid that is more like a hub. I just signed up for a webhosting package that will allow me to explore Drupal “in the wild” rather than on my own little home network. I can now begin to explore xml-rpc interaction between Drupal and my opensim region. I am not what would qualify as a “good drupal/opensim” programmer and wouldn’t be able to spearhead an operation such as this, but I would be a better than average grunt as I continue to learn. (I have already bought the books PHP5 and C# and am kind of heading in this direction.) I was wondering if you had contacts with any of the Sloodle developers (Integrating Moodle with SL would likely have required the solution of many similar problems).