Brian,

http://www.blogstorm.co.uk/greedy-bbc-blocks-external-links/1478/
>
> "Greedy BBC Blocks External Links
> In an outrageous act of selfishness and greed the BBC<http://news.bbc.co.uk/> 
> has
> decided to stop giving real links to the websites featured in the "Related
> Internet Links" section on the right hand side of each news story."
>

I would not categorize this as evil behavior per se... it's to protect from
phishing attacks. Though I would suggest BBC not allow open redirect
altogether and instead generate a hash for the url and append it to the
redirect to ensure that redirects are not open to potential adversaries.

Google's solution is slightly more elegant and they take the hash key
approach:

http://www.google.com/url?sa=t&source=web&ct=res&cd=9&url=http%3A%2F%2Fwww.vaio.eu%2F&ei=pg8QSeKUDIqOwQHN29SuCw&usg=AFQjCNGEZF4TAMzxTywhVCfBZKTJcsE8Qw&sig2=z3E6_NauPvoc6RmJcuaDQA

If you hack the above URL and replace vaio.eu with vaio.com you get a
redirect page similar to BBC's (but no auto-redirect):

http://www.google.com/url?sa=t&source=web&ct=res&cd=9&url=http%3A%2F%2Fwww.vaio.com%2F&ei=pg8QSeKUDIqOwQHN29SuCw&usg=AFQjCNGEZF4TAMzxTywhVCfBZKTJcsE8Qw&sig2=z3E6_NauPvoc6RmJcuaDQA


> I thought *I* went over the top with things like this.  Is is any less evil
> than wikipedia using rel="nofollow" on all its external links?
>
>
Why is this evil or even over the top? Any open system should have
rel="nofollow" to revent attacks to boost PR. If it did not, wikipedia would
become an integral part of the marketing strategy right alongside DMOZ or
something.

-- Aleem B


"It is not the mountain we conquer but ourselves" -- Sir Edmund Hillary
(1919 - 2008)

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