MSN protocol filtering words

[Tom]

Hi everybody. Sorry about the noise but I wish to know about your 
opinions on the next.

 From time to time, I use MSN protocol for communicating because, at 
least here in Argentina, it's the most popular client for the common of 
Argentine guys and girls. Not that I consider myself one of them :P, but 
to be online with the most of my not-nerd friends, I have no choice 
other than use the protocol.

Maybe this isn't new to everybody, but it was for me today as it can be 
to someone else.

Today I've read some mail I receive daily from a mailing list of CS 
Students of the University where I study (UBA), warning everyone of a 
not-very-honest behavior of the MS people in what concerns to their 
client/protocol "MSN Messenger". They do filter messages that contain 
certain words, apparently from web pages that offers some services which 
makes competition to them (I guess). I've made the test myself with the 
word "subitufoto". This is a web page that offers photo upload for free 
(www.subitufoto.com.ar). When the word "subitufoto" appears in some 
message it is apparently sent but currently not received by the other 
peer. I may be naive but this can't be just a bug, can it?
We never know what other words are being filtered/recorded/etc but this 
sucks!

This makes me distrust profoundly of MSN from now on (not in the sense 
of confidentiality which it naturally lacks). I don't know if this is 
something geographically dependent (i.e. only specific for some 
countries or languages), but I've certainly tested it and it's the bare 
and sad true.

Does anyone know something on the subject?

Regards,
--
Tom;
Buenos Aires, Argentina