Defeating web-based content filtering on gateways...
Rory has some comments on proxies that obfuscate the communication at
http://raesene.dnsalias.net/archives/000156.html
(Axel pointed me towards this via
http://balrog.de/security/archives/2005/01/04/55_security-is-not-a-product-once-again )
Personally, I think one shouldn't focus on these cgi/php-based proxies too much. Isn't it far easier to use google's "translate that page" functionality? Or Anonymizer and Co?
.. or - to the same end - a trusted SSL-based reverse proxy???
Of course, the cgi/php-based proxies will give you
+ clicks 'n hits on someone's web ads
+ and a nice click/usage history somewhere
Should be ideal for phising too.. (So please beware!)