Implemented a log base 2 Level on user profiles, based on the cumulative value of their scores on tests, as requested.
Updated the profile stats to display progress nicer.
Added a default to the progress element because it will probably fail in a bunch of older browsers, and fixed an old ref to my_tests that should be created_tests
Changed progress to <meter>.
Added a ranking system into the mix, which you can see on the test page.
Added a rating display to test.html