(Short) URL obfuscation / jumping

[iantresman]

In the search results, was wondering whether anyone has
Replaced URL links with a shortened (hidden) URL
Redirects to the true URLFor example:
http://www.mydomain.com/texts/directory1/file.pdf
Displays as http://www.mydomain.com/jump.php?url=0021But:
http://www.mydomain.com/texts/dir2/sub-dir/filename.htm (http://www.mydomain.com/texts/directory2/sudirec/filename.htm)
Displays as http://www.mydomain.com/jump.php?url=0222Another use for this, is enabling the changing of the destination URL, for example:
Unsubscribed users jump to a URL showing an "Abstract"
Subscribed users jump to a page showing full textRegards,
Ian Tresman

[wrensoft]

Having people directed to different pages if they are not logged in or not subscribed, is a common feature of many web sites. This should be done outside of the search engine however.

There are many other way to get a link besides from site based search engine. e.g. External search engines, from an E-mail, or from a book mark, or just guessing the URL.

So trying to protect content by having a local search engine hide or obfuscate links is pointless in my opinion.

Redirects are also trival to follow, and offer no security.