Wikimedia Maps-l,
Etienne (80n) is seeking a stable host for another instance of OSM-XAPI http://wiki.openstreetmap.org/wiki/Xapi Request: http://lists.openstreetmap.org/pipermail/talk-gb/2009-June/003965.html
XAPI is currently used as a backend for the Wikipedia demonstration by Tim Alder "Query-to-map" running on WM Toolserver: http://wiki.openstreetmap.org/wiki/Query-to-map
Maybe there is room on one of the new servers? Best to contact 80n for install assistance.
XAPI codebase available here: http://xapi.openstreetmap.org/scripts/
/ Grant