And from there, who knows. Some websites append a trailing slash; sometimes they removed it. Some websites send you to /index.php or /home.aspx rather than sitting in the root.
Subpages may use a redirect to update a slug if there's been a title change. Or maybe the website just moved to a new format altogether and is updating old links.
I have seen examples of 4 or 5 legitimate redirects to send users to the correct place. I'm having trouble coming up with 10 possible reasons, though.
