As an example: <a href="http://trophies.ubuntu.com/<username>/<accomplishment-id>">http://trophies.ubuntu.com/<username>/<accomplishment-id></a> and something such as <a href="http://trophies.ubuntu.com/jonobacon/ubuntu-community/registered-on-launchpad">http://trophies.ubuntu.com/jonobacon/ubuntu-community/registered-on-launchpad</a> - this page gives us the username and accomplishment-id that we need.