Come on you are 3 days late with a new episode, at least give me some sort of excuse, your page says twenty-two episodes are available, yet 20 are uploaded, gimme a break this is one of two shows i watch every week and I am heavily disapointed 
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Oh and yes it is I Johnwrobo, just on another name, since well, this place is bad and the only reason i would ever post here is to complain
Make sure you have all your facts before complaining. Episode 21 will be released on March 13. I'm guessing you got the episode number from the streaming schedule? I don't know why it says we missed an episode, but episode 21 was delayed in Japan because it's the first anniversary of the earthquakes and tsunamis. Besides, I'm pretty sure niconico handles the simulcasting of Future Diary because it's a Funico title.
To be honest with you, up until like monday it did say it was coming out last tuesday. And as i mentioned I would only come here to complain. SOOOOOO this place is slow, 30 second page loads..... there is my complaint for this post.