One problem with following your suggestion is that you cannot refer to an older test again. By including the test id in the URL, I was able to email myself the link, make some changes to my site, then run it again and compare the new results side-by-side against the old results. If only referenced by the site URL, no such comparison would be possible.
will run the test on www.slowcop.com at the time the link is clicked, but have a way to retrieve a permalink URL to that particular test which is like:
Might I therefore suggest a hybrid.
Using http://www.slowcop.com/reports/www.slowcop.com
will run the test on www.slowcop.com at the time the link is clicked, but have a way to retrieve a permalink URL to that particular test which is like:
http://www.slowcop.com/reports/www.slowcop.com/4d6468ff34b95...
so you can reference old tests for comparison.