So last week on worsethanfailure.com, it was reported that Windows Live Messenger was blocking all text with ".scr" in it, which includes the JavaScript code ".scrollto". Of course, this is mainly because, on Windows, a .scr file is a .exe file in disguise.
On Adium, they're compiled a list of all text that Microsoft blocks:
http://trac.adiumx.com/wiki/MSNCensorshipTo save some trouble, here are the strings they've found so far:
* .info
* profile.php? (including ‘?’)
* download.php? (including ‘?’)
* gallery.php
* pics.php
* ListAllTopics.php
* .scr (source)
I'm not really sure what good this does. Guess it's good for a false sense of security.