The web's biggest source for user-submitted videos is not just censored in Brazil, China, Turkey and a handful of other websites anymore. It is now effectively banned worldwide from instant messages on Microsoft's Messenger network.
Around 3:00 AM this morning the first reports started coming in about Messenger not delivering messages that include clickable links to YouTube. This indicates that YouTube is being blocked by the (dreadful) server-side SPIM filter. If the user includes http:// in the link, he will be notified of the failed delivery ("The following message could not be delivered to all recipients"). Without the http-prefix, the user will have no clue that the message didn't get across.
God damn it.
I constantly use MSN to spread links to my favourite YouTube, now this is gonna suck.
http://www.mess.be/