Well it's been 4 days since Sony pulled the plug and there is no clear time frame as to when it will be back up. Sony however, has not been quiet. They have informed us that it was an "external intrusion" and to do a thorough investigation and stop any security breach they had to pull the plug. The latest statement from Sony can be found here. on the Playstation blog According to this article at PSU.com Japan's PSN will be restored today and if all goes well EU and US regions tomorrow.
Hopefully the cost of downtime, additional 24 hour support for last four days and repair of equipment doesn't encourage Sony to adopt Micro$ofts' pay for play scheme! With any luck these hackers will be cought and prosicuted to the fullest extent of the law.
Update: This downtime has not allowed me to take full advantage of all the features in Portal 2 or Socom 4. Both of my reviews will be posted as soon as the PSN is back up and I have had ample time to play! Will be using the Sharpshooter peripheral with Socom 4 today but only single player.