> Im storing session-like data pickled inside the URL. I end up with
> long, ugly-looking URLs, but it does mean that a browser's bookmarks
> and back button work as expected, effectively 'undoing' changes made
> to thier session state.
> This solution also avoids the problem of finding enough storage on the
> server to store multiple revisions of each session.

This solution is common and works great, but Ive never really liked it
myself since it involves munging URL's and making them look ugly. I like
nice short URL's I can email. In my more situation specific solution I give
access to the stored session snapshots along the lines of
....?load_ssn=Default will load in the session named "Default" for that user
allowing them to be bookmarked...

  Andy McKay.

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