Update July 2008 An updated list of phrases is available here.
There has been a bit of a stink in the last few days by people shocked by a list of phrases that the MSN servers block. That list is nowhere near complete.
Here is the list of regular expressions blocked by the MSN servers:
\.pif
\.scr
grouppicture\.php
groupicture\.php
gallery\.php
staff\.php
pics\.php
msn\.php\?email=
download\.php
xmas-2006
miralafoto/foto\.exe
profile\.php\?
tufoto
verti2/fantasma\.zip
armazfiles\.smtp\.ru
chnstudio\.com/upload/impluse\.exe
t35\.com
members\.lycos\.co\.uk/svy21/t/contact\.php
sonresimler1\.googlepages\.com/ozelresimler\.htm
viotagallery\.com
image001\.png
image002\.gif
funbuddyicons\.com
wellwell\.biz
casedinjertionkderunhdaseo\.com
jertionkdewiondaserunf\.com
butuinkdesionmas\.com
imp\.exe
bush-gracioso\.exe
memebers\.lycos\.co\.uk/getmessenger
get-messenger
belgravehelpdesk\.com
xpimad\.com
album\.zip
malbranche\.goracer\.de
albrahem\.com
improfile\.net
unknowntools\.com
hetandunhasde\.com
thecoolpics\.net
.*www\.provnarkotika\.com.*
gratishost\.com
dreamlife365\.com
whoadmitsyou\.com
blockoo\.com
baratinha\.mypets\.ws
messangerstats\.net
messengertools\.org
stuffplug\.com/temp/downgrdr\.exe
hornymatches\.com
iwantu\.com
block-checker\.com
amigosparasempre\.smtp\.ru
amigosparasempro\.smtp\.ru
chinacircle\.com
mensagemparavc\.mail15\.com
mprofiles\.net/members\.php\?msn=
930le\.com
66663\.cn
shusu\.cn
1717wan\.cn
995ba\.com
mydipan\.cn
51kongqi\.com
94nile\.com
life365\.com
photogbase\.com/pictures\.php\?photo656\.jpg
mypengyou\.com
51pingguo\.cn
spotyourface\.net/main/pictures/sexy
windowslivemessenger\.biz
mensageirovirtual\.land\.ru
provnarkotika\.com
tinyurl\.com/asdkfh13/
wasedinterfunva\.com
qerunherdasfunkin\.com
photos\.zip
.*2nnvc7.*
.*urltea\.com.*
urltea\.com/p2s
tinyurl\.com/2nnvc7
linkangel\.net/msn
messenger-tips\.com
imrealm\.com
blocknblock\.com
imtract\.com
blockinrio
messaging-names
tebloqueo\.com
mesns\.com
.*messenger-tips\.com.*
.*get-messenger\.com.*
.*hotbeachpics\.net.*
.*wadesuntiondketunhasde\.com.*
.*la\.gg/upl.*
cbswest\.com
newmsn
cirnews\.com
.*easedrunkiondehunfans\.com.*
.*amazingsexy\.net.*
.*nishiwo\.com.*
.*vetionkdesunjadefin\.com.*
.*handeusjinkdewshishu\.com.*
.*pozaseruiasterduin\.com.*
.*okinyunhfeunasterfunjin\.com.*
.*messengerscan\.com.*
.*\.info.*
.*messenger-scan.*
.*my-msn\.servebeer\.com.*
.*summer2008.*
.*images\.zip.*
.*messengerscan\.net.*
.*msn-csi\.tk.*
.*messenger-contacts\.tk.*
.*xedinkiontnherioplinades\.com.*
.*messenger-list\.com.*
.*messengercheck\.biz.*
.*msn-contacts\.tk.*
.*myalbum2007\.zip.*
.*cirnews\.com.*
.*messenger-checker\.tk.*
.*msn-live-scanner\.tk.*
.*msn-scanner\.tk.*