Hi,
I think the only advantages of these extensions are dis-advantages.
The must-read on this topic is from Tim Berners-Lee "Cool URIs don't change":
http://www.w3.org/Provider/Style/URI.html
If you must use any extension at all - please consider something that anyone finds meaningful. The strange extensions may give maybe some "security through obscurity", but in longer term you will curse them.
Rene Saarsoo ****************************************************** The discussion list for http://webstandardsgroup.org/
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