Seems like it only works with http redirects, not meta refresh or js redirects.
In particular, I love that this tool tells you when a bounce sets a cookie (and how many).
This is an excellent tool, I have been using it for a long time now. I am in the app business, I find it useful for discovering affiliate programs I wan't aware of from other peoples links, other revenue generating opportunities.
Doesn't find anything when I input one of those youtube redirect links.