Because they need to be checked if it's suitable for public view (no offensive language or links to porn ) Don't worry.
He will message you in a few days and ask what you want put in the news item. Took him 3 days to get to my request when I used one of those
The post news item puts a line or two above the area where the Q&As appear. Where Jon's gator thread is advertised and where a reminder appears every now and then to vote for this site. AFAIK
Because the mods just move the first formatted item to the news section The Q&As themselves are created by vigilant members who lurk the BNet forums