[wp-hackers] Duplicate Content Issue - URLs work with dots and colons in it

[Baki Goxhaj]

Hi guys,

URLs with a dot, a colon, or many, still works and Google treats it as
duplicate content. Here is an example:

Original:http://ma.tt/2010/11/one-point-oh/
With a dot: http://ma.tt/2010/11/one-point-oh./
With a column: http://ma.tt/2010/11/one-point-oh:/
With many dots:
http://ma.tt/2010/11/one-point-oh...../<http://wplancer.com/a-beginners-guide-to-the-command-line........../>

All of these URLs work and if mistakenly on the site, they will be
considered duplicate content by Google.

Is this a bug? If not, why is this happening?

PS: I wrote about this in the support forums, but the post seems filled
with typos, thus it might be a reason I had no replies there:
http://wordpress.org/support/topic/dublicate-content-url-works-with-tots-and-columns-in-it
Kindly,

Baki Goxhaj
about.me/banago