"Unavailable!" After doing research to answer a question, and clicking on 'submit'...?

Why could Y/A not let posters know ahead of time that the question was "Unavailable!"

They can do this!

RAVEN2011-03-20T02:09:36Z

Favorite Answer

its a glitch i have noticed too

one question i answered was important
i hit the back button
so i copied and pasted my answer
and went back to the question in the section again
and found i could answer it that way

lot of faff its just a general Q, but worth it if the asker is in genuine need of help