Mailblocks was working well for me ever since it it failed on my in January. At the time, I told them that they should have an outages page so that users could find out why mail wasn't working and when it might be back up.
This time, I can access the mailbox, but I haven't been able to receive any new mail for about 8.5 hrs. So if you're trying to reach me urgently, please email me or leave a comment here.
They don't have any information on their page or replied to the email I've sent. hmm...
I am joi_ito at mac.com on AIM.
UPDATE: FYI. Mailblocks was acquired by AOL.