"If you are running more than one Drupal site, you can simplify management and upgrading of your sites by using the multi-site feature. Multi-site allows you to share a single Drupal installation (including core code, contributed modules, and themes) among several sites.
This is particularly useful for managing the code since each upgrade only needs to be done once. Each site will have its own database and its own configuration settings, so each site will have its own content, settings, enabled modules, and enabled theme. However, the sites are sharing a code base and web document root, so there may be security concerns (see section below for more information)."
Litenode is a new module that uses Views to replace multiple node_loads() on a page.
The concept is simple: Views already knows how to grab any of the fields in a single go that many modules load independently in their hook_nodeapi('load'). Why not have Views grab them all at once (as you would do in a table view, for example) and then have a style plugin map the Views fields to all the places where modules expect them to be on a loaded node?