Thanks to reed, justdave, mrz, and seth (community giving), mxr.mozilla.org and other webtools have their own box (konigsberg.mozilla.org) for testing.
landfill was getting too crowded:
For the time being, the major user of the box will be mxr, which focuses on linking items together.
There is a history to this inspirational mathemetics problem.
For people interested in using, testing, seeing, or helping with mxr-test, you will have to contact me with your ip address, as we had problems with resource loads at our previous location and for the time being, I'm simply whitelisting people.