Please do not post days, months, times, locations of deployments. These things are too specific. Saying "he leaves soon, or this summer, or in the fall" is ok. It absolutely IS a big deal and I will moderate them.
Please do not post you/your spouses name, rank, MOS. If you have your name in your SN you should really consider starting over with a new one.
This website is very public, there are no security features to it. There have been times when people have been found based just off the information found on this website. Why would you want to advertise where you are and that your significant other is deployed and you are home? It is all about puzzle pieces, give one here and there and eventually they can be put together. I know policies often vary by branch but this is something I take very seriously. I personally have been held in country because someone had to tell their Facebook friends when we were coming home. That extra two weeks while waiting for a new flight, sucked. I will do everything I can to prevent that from happening to my brothers and sisters in arms. Why risk it?
ETA - Here's a story that I witnessed first hand from The Nest.
A semi regular poster had been posting about her ugly custody battle with her STBXH and all the drama that it entailed. After a while, a few people started to question her and whether she was making some of it up. A poster from the board then used the few pieces she had mentioned(where they live, a recent school her H had gone to, etc.) to find the OP on Facebook. She then contacted the poster's husband to ask if any of the story was true. This lead to a giant board war, people being banned, and many friendships ruined. The OP had never given out specific details but we all knew just enough about her to get in contact with her or her H and someone felt it was necessary. The shiit absolutely does happen. Crazies are out there.
Also, you can tell me I'm uptight and too strict, that is fine. I know my policy(Army) and will enforce them where I see fit.