Looks like the Ubuntu Bazaar+Launchpad has had a bit of a change recently. As such, any inbound links now 404, since they didn’t seem to bother with redirection logic for the new home of the page/info.
One such example which I was trying desperately to find were the cloud-init examples. Everywhere I could find was linking them to http://bazaar.launchpad.net/~cloud-init-dev/cloud-init/trunk/files/head:/doc/examples/ (which I haven’t linked, so that it hopefully doesn’t gain any search rank). However, you’ll now find them here:
Which, as you can tell is simply the bit of the Bazaar URL after the “head:” section, added to the project name (cloud-init) followed by ‘tree’ to represent the source code repo browser.
Hopefully someone hunting for the same as me finds this and therefore finds the examples.