Keep a copy of your posts before posting
Today I wrote a relatively long response but when I tried to post the response it disappeared. The forum post web page just had a blank box for the post and I got an error message saying that the post could not be blank. I then posted a small response that did get posted. It happened at about 7:23 PM in the US east cost time; about 5:53 AM in India.
So you should keep a copy of what you post before pushing the Post button; I usually copy the post to my clipboard at least before pushing Post.