If you can see this, your browser has followed a 307 Temporary Redirect.
If the URL bar shows http://www.aaronsw.com/2002/redirecttest/explanation your browser fails.
If the URL bar shows http://www.aaronsw.com/2002/redirecttest/ your browser passes.
References
This is Common User-Agent Problem 3.4 and Mozilla bug 68423.
Results
Every browser I've tried fails this test.
If you've found a browser that passes the test, email me.