<p>I'm wondering if there's any way to have Firefox 3 (or IE 7 or safari 3.1 or Opera) flag that a redirect has occurred (i.e. any deltas between the hyperlink or URL entered into address bar, and the page you land on), whether you've arrived from a hyperlink or entering URL into address bar.</p>

<p>I've googled some, looked at the <a href="https://addons.mozilla.org/en-US/firefox/addon/8092" rel="nofollow noreferrer">linker addon</a>, but the rightclick is an additional step I don't want to have to do.</p>

<p>Edit: If anybody can point me at the mozilla docs that show how to track clicked links and pages landed on in different tabs, i'll take a crack at writing a bookmarklet.  TIA</p>

I don't think this will help, since you don't want to do the right click for the linker add-on, but if I needed to do know if I was being redirected, I would use the
LiveHTTPHeaders
extension.  It supports regular expressions, so you can only get headers that include 'Location'.
The reason I don't think it is what you are looking for is that you have to open it before the link, it won't "flag" a redirect and pop a message up or anything.